diff --git a/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.cpp b/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.cpp
index c2dd31b..41d527b 100644
--- a/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.cpp
+++ b/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.cpp
@@ -7,6 +7,8 @@
 
 #include "ethernet_industry/CoE/eth_ecat_pdo_fmmu.hpp"
 
+#include <algorithm>
+
 namespace free_rtos {
 
 namespace ecat_pdo_fmmu {
@@ -17,68 +19,88 @@ void EthEcatPdoFMMU::init() {
     pdo_fmmu_slaves_.reserve(buffer_slaves.size());
 
     for(ecat_buffer::EcatBufferSlave& buffer_slave : buffer_slaves) {
-        pdo_fmmu_slaves_.push_back(EcatPdoFMMUSlave{buffer_slave});
+        pdo_fmmu_slaves_.emplace_back(EcatPdoFMMUSlave{buffer_slave});
     }
 }
 
 void EthEcatPdoFMMU::wait_op() {
     free_rtos::Semaphore& init_sem = ecat_buffer_.get_ecat().get_init_sem();
     free_rtos::Semaphore& process_sem = ecat_buffer_.get_ecat().get_process_sem();
-    std::array<std::array<uint8_t, 55>, 2> process_data;
 
     process_sem.pend();
 
-    process_data[0].fill(0x00);
-    process_data[1].fill(0x00);
+    uint32_t logical_full_length_write = ecat_buffer_.get_fmmu_global_properties().logical_full_length_write;
+    uint32_t logical_full_length_read = ecat_buffer_.get_fmmu_global_properties().logical_full_length_read;
+    std::vector<uint8_t> process_data(std::min(logical_full_length_write, logical_full_length_read));
 
-    read(process_data[0], process_data[1]);
+    read(0, process_data);
 /*
-    for(uint8_t& byte : process_data[0]) {
+    for(uint8_t& byte : process_data) {
         DebugP_log("0x%01x", byte);
     }
     DebugP_log("\r\n");
 */
-    write(process_data[0], process_data[1]);
+    write(0, process_data);
 
     init_sem.post();
     process_sem.pend();
 
     for(uint32_t i = 0; i < 250; i++) {
-        read(process_data[0], process_data[1]);
+        read(0, process_data);
 /*
-        for(uint8_t& byte : process_data[0]) {
+        for(uint8_t& byte : process_data) {
             DebugP_log("0x%01x", byte);
         }
         DebugP_log("\r\n");
 */
-        write(process_data[0], process_data[1]);
-
-        //ClockP_usleep(125ul);
+        write(0, process_data);
     }
 
     init_sem.post();
     process_sem.pend();
 }
 
+void EthEcatPdoFMMU::process_write_queue(uint8_t* process_data, uint32_t len) {
+    pdo_promise::IPDOPromise *next = write_queue_;
+
+    while(next != nullptr) {
+        next->set_value(process_data, len);
+        next = next->get_next();
+    }
+
+    write_queue_ = nullptr;
+}
+
+void EthEcatPdoFMMU::process_read_queue(uint8_t* process_data, uint32_t len) {
+    pdo_promise::IPDOPromise *next = read_queue_;
+
+    while(next != nullptr) {
+        next->set_value(process_data, len);
+        next = next->get_next();
+    }
+
+    read_queue_ = nullptr;
+}
+
 void EthEcatPdoFMMU::process() {
-    std::array<std::array<uint8_t, 55>, 2> process_data;
-
-    process_data[0].fill(0x00);
-    process_data[1].fill(0x00);
-
     wait_op();
 
+    uint32_t logical_full_length_write = ecat_buffer_.get_fmmu_global_properties().logical_full_length_write;
+    uint32_t logical_full_length_read = ecat_buffer_.get_fmmu_global_properties().logical_full_length_read;
+    std::vector<uint8_t> process_data(std::min(logical_full_length_write, logical_full_length_read));
+
     while(1) {
-        read(process_data[0], process_data[1]);
+        read(0, process_data);
 /*
-        for(uint8_t& byte : process_data[0]) {
+        for(uint8_t& byte : process_data) {
             DebugP_log("0x%01x", byte);
         }
         DebugP_log("\r\n");
 */
-        write(process_data[0], process_data[1]);
+        process_read_queue(process_data.data(), process_data.size());
+        process_write_queue(process_data.data(), process_data.size());
 
-        //ClockP_usleep(125ul);
+        write(0, process_data);
     }
 }
 
diff --git a/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.hpp b/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.hpp
index 7033cae..05a8342 100644
--- a/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.hpp
+++ b/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_fmmu.hpp
@@ -8,7 +8,10 @@
 #ifndef FREE_RTOS_ETHERNET_INDUSTRY_COE_ETH_ECAT_PDO_FMMU_HPP_
 #define FREE_RTOS_ETHERNET_INDUSTRY_COE_ETH_ECAT_PDO_FMMU_HPP_
 
+#include "semaphore/semaphore.hpp"
+
 #include "ethernet_industry/eth_ecat_buffer.hpp"
+#include "ethernet_industry/CoE/eth_ecat_pdo_promise.hpp"
 
 namespace free_rtos {
 
@@ -21,59 +24,102 @@ public:
 
     template<typename DataType>
     datagram::EcatDatagram<command::LWR, DataType> make_datagram_write(DataType& data) {
+        using TDatagram = datagram::EcatDatagram<command::LWR, DataType>;
+
         ecat_buffer::FMMUProperties& fmmu_properties = buffer_slave_.get_fmmu_properties_write();
         address::Logical logical = fmmu_properties.address;
 
-        return datagram::EcatDatagram<command::LWR, DataType>{ {{logical}}, data };
+        return TDatagram{ {{logical}}, data };
     }
 
     template<typename DataType>
     datagram::EcatDatagram<command::LRD, DataType> make_datagram_read(DataType& data) {
+        using TDatagram = datagram::EcatDatagram<command::LRD, DataType>;
+
         ecat_buffer::FMMUProperties& fmmu_properties = buffer_slave_.get_fmmu_properties_read();
         address::Logical logical = fmmu_properties.address;
 
-        return datagram::EcatDatagram<command::LRD, DataType>{ {{logical}}, data };
+        return TDatagram{ {{logical}}, data };
     }
 
 private:
     ecat_buffer::EcatBufferSlave& buffer_slave_;
 };
 
-// Функтор для работы с датаграммами в custom_tuple
+
+// Функтор для обхода и передачи датаграмм в custom_tuple
 struct DatagramFunctor {
     datagram::EcatTelegram& telegram;
     size_t number_of_slaves;
+    datagram::IEcatDatagram *next;
 
-    // Первый/последний вызов при forward/reverse обходе custom_tuple
     template<typename DatagramT>
     void operator()(DatagramT& datagram) {
+        if(next != nullptr) {
+           datagram + *next;
+        }
+
+        next = &datagram;
+    }
+
+    void operator()() {
+        if(next == nullptr) {
+            return;
+        }
+
         do {
-            telegram.transfer(datagram);
-        } while(datagram.get_all_wkc() < number_of_slaves);
+            telegram.transfer(*next);
+        } while(next->get_all_wkc() < number_of_slaves);
     }
-
-    // Последующие вызовы в custom_tuple
-    template<typename DatagramT, typename DatagramPreviousT>
-    void operator()(DatagramT& datagram, DatagramPreviousT& previous) {
-        previous + datagram;
-    }
-
-    // Последний/первый вызов при forward/reverse обходе custom_tuple.
-    // Второй аргумент нужен для корректной перегрузки, чтобы отличить от первой сигнатуры
-    template<typename DatagramPreviousT>
-    void operator()(DatagramPreviousT& previous, uint32_t) { }
-
-    // Пустой custom_tuple
-    void operator()() { }
 };
 
 class EthEcatPdoFMMU {
 public:
-    EthEcatPdoFMMU(ecat_buffer::EthEcatBuffer& ecat_mailbox): ecat_buffer_{ecat_mailbox} { }
+    EthEcatPdoFMMU(ecat_buffer::EthEcatBuffer& ecat_buffer): ecat_buffer_{ecat_buffer} { }
 
     void init();
     void process();
 
+    template<typename... DataTypes>
+    void pdo_write(address::Offset offset, DataTypes&... data) {
+        pdo_promise::PDOWritePromise<DataTypes...> promise{offset, data...};
+
+        write_queue_ = &promise; // TODO: Доделать добавление в очередь более одного элемента
+
+        promise.get_future().get();
+    }
+
+    template<typename... DataTypes>
+    void pdo_read(address::Offset offset, DataTypes&... data) {
+        pdo_promise::PDOReadPromise<DataTypes...> promise{offset, data...};
+
+        read_queue_ = &promise; // TODO: Доделать добавление в очередь более одного элемента
+
+        promise.get_future().get();
+    }
+
+    void pdo_write_async(pdo_promise::IPDOPromise& promise) {
+        write_queue_ = &promise; // TODO: Доделать добавление в очередь более одного элемента
+    }
+
+    void pdo_read_async(pdo_promise::IPDOPromise& promise) {
+        read_queue_ = &promise; // TODO: Доделать добавление в очередь более одного элемента
+    }
+
+private:
+    ecat_buffer::EthEcatBuffer& ecat_buffer_;
+
+    std::vector<EcatPdoFMMUSlave> pdo_fmmu_slaves_;
+
+    pdo_promise::IPDOPromise *write_queue_{nullptr};
+    pdo_promise::IPDOPromise *read_queue_{nullptr};
+
+    void wait_op();
+
+    void process_write_queue(uint8_t* process_data, uint32_t len);
+    void process_read_queue(uint8_t* process_data, uint32_t len);
+
+    // Запись PDO замапленных каждым слейвом
     template<typename... DataTypes>
     void write(DataTypes&... data) {
         if(sizeof...(data) > pdo_fmmu_slaves_.size()) {
@@ -82,11 +128,12 @@ public:
 
         size_t i = 0;
         custom_tuple<datagram::EcatDatagram<command::LWR, DataTypes>...> datagram_tuple{pdo_fmmu_slaves_[i++].make_datagram_write(data)...};
-        DatagramFunctor functor{ecat_buffer_.get_ecat().get_telegram(), pdo_fmmu_slaves_.size()};
+        DatagramFunctor functor{ecat_buffer_.get_ecat().get_telegram(), pdo_fmmu_slaves_.size(), nullptr};
 
-        datagram_tuple.for_each_reverse(functor);
+        for_each_reverse(datagram_tuple, functor);
     }
 
+    // Чтение PDO замапленных каждым слейвом
     template<typename... DataTypes>
     void read(DataTypes&... data) {
         if(sizeof...(data) > pdo_fmmu_slaves_.size()) {
@@ -95,11 +142,12 @@ public:
 
         size_t i = 0;
         custom_tuple<datagram::EcatDatagram<command::LRD, DataTypes>...> datagram_tuple{pdo_fmmu_slaves_[i++].make_datagram_read(data)...};
-        DatagramFunctor functor{ecat_buffer_.get_ecat().get_telegram(), pdo_fmmu_slaves_.size()};
+        DatagramFunctor functor{ecat_buffer_.get_ecat().get_telegram(), pdo_fmmu_slaves_.size(), nullptr};
 
-        datagram_tuple.for_each_reverse(functor);
+        for_each_reverse(datagram_tuple, functor);
     }
 
+    // Последовательность чтения-записи PDO замапленных каждым слейвом
     template<typename... DataTypes>
     void read_write(DataTypes&... data) {
         if(sizeof...(data) > pdo_fmmu_slaves_.size()) {
@@ -109,21 +157,64 @@ public:
         size_t i = 0;
         size_t j = 0;
 
-        // custom_tuple с датаграммами и на чтение и на запись в две строки. 1 строка - тип, 2 - строка имя переменной
+        // custom_tuple с датаграммами и на чтение и на запись в две строки. 1 строка - тип, 2 строка - имя переменной
         custom_tuple<datagram::EcatDatagram<command::LRD, DataTypes>... , datagram::EcatDatagram<command::LWR, DataTypes>...>
         datagram_tuple{pdo_fmmu_slaves_[i++].make_datagram_read(data)... , pdo_fmmu_slaves_[j++].make_datagram_write(data)...};
 
-        DatagramFunctor functor{ecat_buffer_.get_ecat().get_telegram(), pdo_fmmu_slaves_.size()};
+        DatagramFunctor functor{ecat_buffer_.get_ecat().get_telegram(), pdo_fmmu_slaves_.size(), nullptr};
 
-        datagram_tuple.for_each_reverse(functor);
+        for_each_reverse(datagram_tuple, functor);
     }
 
-private:
-    ecat_buffer::EthEcatBuffer& ecat_buffer_;
+    template<typename... DataTypes>
+    void write(address::Offset offset, DataTypes&... data) {
+        using TDatagram = datagram::EcatDatagram<command::LWR, DataTypes...>;
 
-    std::vector<EcatPdoFMMUSlave> pdo_fmmu_slaves_;
+        datagram::EcatTelegram& telegram = ecat_buffer_.get_ecat().get_telegram();
+        ecat_buffer::FMMUGlobalProperties& fmmu_global_properties = ecat_buffer_.get_fmmu_global_properties();
+        address::Logical logical = fmmu_global_properties.logical_start_address + offset;
+        TDatagram datagram{ {{logical}}, data... };
+
+        do {
+            telegram.transfer(datagram);
+        } while(datagram.get_wkc() < 0x0001);
+    }
+
+    template<typename... DataTypes>
+    void read(address::Offset offset, DataTypes&... data) {
+        using TDatagram = datagram::EcatDatagram<command::LRD, DataTypes...>;
+
+        datagram::EcatTelegram& telegram = ecat_buffer_.get_ecat().get_telegram();
+        ecat_buffer::FMMUGlobalProperties& fmmu_global_properties = ecat_buffer_.get_fmmu_global_properties();
+        address::Logical logical = fmmu_global_properties.logical_start_address + fmmu_global_properties.logical_full_length_write + offset;
+        TDatagram datagram{ {{logical}}, data... };
+
+        do {
+            telegram.transfer(datagram);
+        } while(datagram.get_wkc() < 0x0001);
+    }
+
+    template<typename... DataTypes>
+    void read_write(address::Offset offset_read, address::Offset offset_write, DataTypes&... data) {
+        using TDatagramRead = datagram::EcatDatagram<command::LRD, DataTypes...>;
+        using TDatagramWrite = datagram::EcatDatagram<command::LWR, DataTypes...>;
+
+        datagram::EcatTelegram& telegram = ecat_buffer_.get_ecat().get_telegram();
+        ecat_buffer::FMMUGlobalProperties& fmmu_global_properties = ecat_buffer_.get_fmmu_global_properties();
+
+        address::Logical logical_read = fmmu_global_properties.logical_start_address + fmmu_global_properties.logical_full_length_write + offset_read;
+        TDatagramRead datagram_read{ {{logical_read}}, data... };
+
+        address::Logical logical_write = fmmu_global_properties.logical_start_address + offset_write;
+        TDatagramWrite datagram_write{ {{logical_write}}, data... };
+
+        datagram_read + datagram_write;
+
+        do {
+            telegram.transfer(datagram_read);
+        } while(datagram_read.get_all_wkc() < 0x0001);
+    }
 
-    void wait_op();
 };
 
 } // namespace ecat_pdo_fmmu
diff --git a/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_promise.hpp b/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_promise.hpp
new file mode 100644
index 0000000..96a46d0
--- /dev/null
+++ b/components/free_rtos/ethernet_industry/CoE/eth_ecat_pdo_promise.hpp
@@ -0,0 +1,129 @@
+/*
+ * eth_ecat_pdo_promise.hpp
+ *
+ *  Created on: Jun 1, 2023
+ *      Author: algin
+ */
+
+#ifndef FREE_RTOS_ETHERNET_INDUSTRY_COE_ETH_ECAT_PDO_PROMISE_HPP_
+#define FREE_RTOS_ETHERNET_INDUSTRY_COE_ETH_ECAT_PDO_PROMISE_HPP_
+
+#include <cstdint>
+
+#include "semaphore/semaphore.hpp"
+
+#include "ethernet_industry/eth_ecat_command.hpp"
+#include "ethernet_industry/eth_ecat_custom_tuple.hpp"
+
+namespace free_rtos {
+
+namespace pdo_promise {
+
+template<typename... DataTypes>
+class PDOFuture {
+public:
+    PDOFuture(DataTypes&... data)
+    : data_tuple_{data...} { }
+
+    bool is_ready() {
+        return ready_;
+    }
+
+    custom_tuple<DataTypes&...> get() {
+        ready_ = false;
+        sem_.pend();
+
+        return data_tuple_;
+    }
+
+    void pack(uint8_t* raw) {
+        PackFunctor functor{raw};
+
+        for_each(data_tuple_, functor);
+
+        sem_.post();
+        ready_ = true;
+    }
+
+    void unpack(uint8_t* raw) {
+        UnpackFunctor functor{raw};
+
+        for_each(data_tuple_, functor);
+
+        sem_.post();
+        ready_ = true;
+    }
+
+private:
+    custom_tuple<DataTypes&...> data_tuple_;
+    free_rtos::Semaphore sem_;
+    bool ready_{false};
+};
+
+class IPDOPromise {
+public:
+    IPDOPromise(address::Offset offset)
+    : offset_{offset} { }
+
+    IPDOPromise* get_next() {
+        return next_;
+    }
+
+    IPDOPromise& operator+(IPDOPromise &next) {
+        next_ = &next;
+
+        return next;
+    }
+
+    virtual void set_value(uint8_t* process_data, uint32_t len) = 0;
+
+protected:
+    address::Offset offset_;
+
+private:
+    IPDOPromise *next_{nullptr};
+};
+
+template<typename... DataTypes>
+class PDOWritePromise : public IPDOPromise {
+public:
+    PDOWritePromise(address::Offset offset, DataTypes&... data)
+    : IPDOPromise{offset}
+    , future_{data...} { }
+
+    PDOFuture<DataTypes...>& get_future() {
+        return future_;
+    }
+
+    virtual void set_value(uint8_t* process_data, uint32_t len) override {
+        future_.pack(process_data + offset_);
+    }
+
+private:
+    PDOFuture<DataTypes...> future_;
+};
+
+template<typename... DataTypes>
+class PDOReadPromise : public IPDOPromise {
+public:
+    PDOReadPromise(address::Offset offset, DataTypes&... data)
+    : IPDOPromise{offset}
+    , future_{data...} { }
+
+    PDOFuture<DataTypes...>& get_future() {
+        return future_;
+    }
+
+    virtual void set_value(uint8_t* process_data, uint32_t len) override {
+        future_.unpack(process_data + offset_);
+    }
+
+private:
+    PDOFuture<DataTypes...> future_;
+};
+
+} // namespace pdo_promise
+
+} // namespace free_rtos
+
+#endif /* FREE_RTOS_ETHERNET_INDUSTRY_COE_ETH_ECAT_PDO_PROMISE_HPP_ */
diff --git a/components/free_rtos/ethernet_industry/CoE/eth_ecat_sdo_mailbox.cpp b/components/free_rtos/ethernet_industry/CoE/eth_ecat_sdo_mailbox.cpp
index 2337133..ddb52d5 100644
--- a/components/free_rtos/ethernet_industry/CoE/eth_ecat_sdo_mailbox.cpp
+++ b/components/free_rtos/ethernet_industry/CoE/eth_ecat_sdo_mailbox.cpp
@@ -18,16 +18,16 @@ void EthEcatSdoMailbox::init() {
     pdo_map_.reserve(buffer_slaves.size());
 
     for(ecat_buffer::EcatBufferSlave& mailbox_slave : buffer_slaves) {
-        sdo_mailbox_slaves_.push_back(EcatSdoMailboxSlave{mailbox_slave});
+        sdo_mailbox_slaves_.emplace_back(EcatSdoMailboxSlave{mailbox_slave});
     }
 }
 
-void EthEcatSdoMailbox::pdo_map_read(uint16_t pdo_map_rx_index, uint16_t pdo_map_tx_index) {
+void EthEcatSdoMailbox::read_pdo_map(uint16_t pdo_map_rx_index, uint16_t pdo_map_tx_index) {
     datagram::EcatTelegram& telegram = ecat_buffer_.get_ecat().get_telegram();
-    uint16_t pdo_rx_data_size{0x0000};
-    uint16_t pdo_tx_data_size{0x0000};
 
     for(EcatSdoMailboxSlave& sdo_mailbox_slave : sdo_mailbox_slaves_) {
+        uint16_t pdo_rx_data_size{0x0000};
+        uint16_t pdo_tx_data_size{0x0000};
         ecat_buffer::PDOMap pdo_map;
 
         DebugP_log("Reading rx pdo map\r\n");
@@ -36,7 +36,7 @@ void EthEcatSdoMailbox::pdo_map_read(uint16_t pdo_map_rx_index, uint16_t pdo_map
         DebugP_log("Reading tx pdo map\r\n");
         pdo_tx_data_size = sdo_mailbox_slave.pdo_map_read<command::FP>(telegram, pdo_map, pdo_map_tx_index);
 
-        pdo_map_.push_back(std::move(pdo_map));
+        pdo_map_.emplace_back(std::move(pdo_map));
 
         DebugP_log("pdo_rx_data_size = %d\r\n", pdo_rx_data_size);
         DebugP_log("pdo_tx_data_size = %d\r\n", pdo_tx_data_size);
diff --git a/components/free_rtos/ethernet_industry/CoE/eth_ecat_sdo_mailbox.hpp b/components/free_rtos/ethernet_industry/CoE/eth_ecat_sdo_mailbox.hpp
index 6b9934f..e4afe92 100644
--- a/components/free_rtos/ethernet_industry/CoE/eth_ecat_sdo_mailbox.hpp
+++ b/components/free_rtos/ethernet_industry/CoE/eth_ecat_sdo_mailbox.hpp
@@ -99,71 +99,41 @@ struct MailboxHeader {
 } // namespace ecat_sdo_mailbox
 
 // Специализация шаблона для распаковки протокола CoE
-template<typename... TailT>
-struct custom_tuple<ecat_sdo_mailbox::CoEElements&, ecat_sdo_mailbox::CompleteSize&, TailT...> : custom_tuple<TailT...> {
-    custom_tuple(ecat_sdo_mailbox::CoEElements& head, ecat_sdo_mailbox::CompleteSize& complete_size, TailT... tail)
-    : custom_tuple<TailT...>(tail...)
-    , head_(head)
-    , complete_size_(complete_size) { }
+template<typename FunctorT, typename... TailT>
+struct each_tuple_element<FunctorT, custom_tuple<ecat_sdo_mailbox::CoEElements&, ecat_sdo_mailbox::CompleteSize&, TailT...>> {
+    using TTuple = custom_tuple<ecat_sdo_mailbox::CoEElements&, ecat_sdo_mailbox::CompleteSize&, TailT...>;
+    using TBase = each_tuple_element<FunctorT, typename TTuple::TBase>;
+    using TBaseBase = each_tuple_element<FunctorT, typename TTuple::TBase::TBase>;
 
-    using TBase = custom_tuple<TailT...>;
+    static void for_each(FunctorT& functor, TTuple& t) {
+        functor(t.head_);
 
-    constexpr static size_t size = sizeof(ecat_sdo_mailbox::CoEElements) + sizeof(ecat_sdo_mailbox::CompleteSize) + TBase::size;
-
-    ecat_sdo_mailbox::CoEElements& head_;
-    ecat_sdo_mailbox::CompleteSize& complete_size_;
-
-    uint8_t* pack_complete_size(uint8_t *raw) {
-        if(head_.command_specifier.transfer_type == static_cast<uint8_t>(ecat_sdo_mailbox::TransferType::NORMAL)) {
-            ecat_sdo_mailbox::CompleteSize* complete_size = new(raw) ecat_sdo_mailbox::CompleteSize{complete_size_};
-
-            (void)complete_size;
-
-            raw += sizeof(ecat_sdo_mailbox::CompleteSize);
-            raw = TBase::pack(raw);
+        if(t.head_.command_specifier.transfer_type == static_cast<uint8_t>(ecat_sdo_mailbox::TransferType::NORMAL)) {
+            TBase::for_each(functor, t);
         }
 
-        if(head_.command_specifier.transfer_type == static_cast<uint8_t>(ecat_sdo_mailbox::TransferType::EXPEDITED)) {
-            // По-нормальному мы не должны сюда попадать, т.к. в expedited транзакции не должно быть блока CompleteSize,
-            // значит либо пользователь ошибся, либо после предыдущей отправки датаграммы слейв указал тип expedited
-            raw = TBase::pack(raw);
-            raw += sizeof(ecat_sdo_mailbox::CompleteSize);
-        }
+        if(t.head_.command_specifier.transfer_type == static_cast<uint8_t>(ecat_sdo_mailbox::TransferType::EXPEDITED)) {
+            TBaseBase::for_each(functor, t);
 
-        return raw;
+            Padding padding{sizeof(typename TTuple::TBase::THead)};
+            functor(padding);
+        }
     }
 
-    uint8_t* pack(uint8_t *raw) {
-        ecat_sdo_mailbox::CoEElements *head = new(raw) ecat_sdo_mailbox::CoEElements{head_};
-
-        (void)head;
-
-        return pack_complete_size(raw + sizeof(ecat_sdo_mailbox::CoEElements));
-    }
-
-    uint8_t* unpack_complete_size(uint8_t *raw) {
-        if(head_.command_specifier.transfer_type == static_cast<uint8_t>(ecat_sdo_mailbox::TransferType::NORMAL)) {
-            ecat_sdo_mailbox::CompleteSize *complete_size = reinterpret_cast<ecat_sdo_mailbox::CompleteSize*>(raw);
-
-            complete_size_ = *complete_size;
-
-            raw += sizeof(ecat_sdo_mailbox::CompleteSize);
-            raw = TBase::unpack(raw);
+    // Не используется, но пускай будет
+    static void for_each_reverse(FunctorT& functor, TTuple& t) {
+        if(t.head_.command_specifier.transfer_type == static_cast<uint8_t>(ecat_sdo_mailbox::TransferType::NORMAL)) {
+            TBase::for_each_reverse(functor, t);
         }
 
-        if(head_.command_specifier.transfer_type == static_cast<uint8_t>(ecat_sdo_mailbox::TransferType::EXPEDITED)) {
-            raw = TBase::unpack(raw);
-            raw += sizeof(ecat_sdo_mailbox::CompleteSize);
+        if(t.head_.command_specifier.transfer_type == static_cast<uint8_t>(ecat_sdo_mailbox::TransferType::EXPEDITED)) {
+            Padding padding{sizeof(typename TTuple::TBase::THead)};
+            functor(padding);
+
+            TBaseBase::for_each_reverse(functor, t);
         }
 
-        return raw;
-    }
-
-    uint8_t* unpack(uint8_t *raw) {
-        ecat_sdo_mailbox::CoEElements *head = reinterpret_cast<ecat_sdo_mailbox::CoEElements*>(raw);
-        head_ = *head;
-
-        return unpack_complete_size(raw + sizeof(ecat_sdo_mailbox::CoEElements));
+        functor(t.head_);
     }
 };
 
@@ -227,6 +197,7 @@ public:
     template<typename TypeT, typename... DataTypes>
     void send_data(datagram::EcatTelegram& telegram, uint16_t channel, uint16_t priority, ProtocolType type, DataTypes&... data) {
         using TCommand = command::EcatCommand<TypeT, command::WR>;
+        using TDatagram = datagram::EcatDatagram<TCommand, MailboxHeader, DataTypes... , Padding>;
 
         EcatSlave& slave = buffer_slave_.get_slave();
         auto slave_address = slave.get_slave_address<TypeT>();
@@ -239,10 +210,8 @@ public:
             .type = type,
             .cnt = static_cast<uint16_t>(counter_)
         };
-        datagram::EcatDatagram<TCommand, MailboxHeader, DataTypes...> datagram{ {{slave_address, buffer_regs[MailboxesRegs::WRITE]}}, header, data... };
-        uint16_t padding = buffer_slave_.get_buffer_properties_write().length - sizeof(MailboxHeader) - custom_tuple<DataTypes...>::size;
-
-        datagram.set_padding(padding);
+        Padding padding{buffer_slave_.get_buffer_properties_write().length - sizeof(MailboxHeader) - custom_tuple<DataTypes...>::size};
+        TDatagram datagram{ {{slave_address, buffer_regs[MailboxesRegs::WRITE]}}, header, data... , padding};
 
         do {
             telegram.transfer(datagram);
@@ -254,14 +223,13 @@ public:
     template<typename TypeT, typename... DataTypes>
     void receive_data(datagram::EcatTelegram& telegram, DataTypes&... data) {
         using TCommand = command::EcatCommand<TypeT, command::RD>;
+        using TDatagram = datagram::EcatDatagram<TCommand, MailboxHeader, DataTypes... , Padding>;
 
         auto slave_address = buffer_slave_.get_slave().get_slave_address<TypeT>();
         std::array<address::Offset, 4>& buffer_regs = buffer_slave_.get_buffer_regs();
         MailboxHeader header;
-        datagram::EcatDatagram<TCommand, MailboxHeader, DataTypes...> datagram{ {{slave_address, buffer_regs[MailboxesRegs::READ]}}, header, data... };
-        uint16_t padding = buffer_slave_.get_buffer_properties_read().length - sizeof(MailboxHeader) - custom_tuple<DataTypes...>::size;
-
-        datagram.set_padding(padding);
+        Padding padding{buffer_slave_.get_buffer_properties_read().length - sizeof(MailboxHeader) - custom_tuple<DataTypes...>::size};
+        TDatagram datagram{ {{slave_address, buffer_regs[MailboxesRegs::READ]}}, header, data... , padding};
 
         do {
             telegram.transfer(datagram);
@@ -290,7 +258,45 @@ public:
     }
 
     template<typename TypeT, typename... DataTypes>
-    void sdo_read(datagram::EcatTelegram& telegram, uint16_t index, uint8_t subindex, DataTypes&... data) {
+    CompleteSize sdo_write(datagram::EcatTelegram& telegram, uint16_t index, uint8_t subindex, DataTypes&... data) {
+        CoEElements elements{
+            .coe_header = {
+                .number = 0x00,
+                .service = static_cast<uint8_t>(Service::SDO_REQUEST) },
+            .command_specifier = {
+                .size = 1,
+                .transfer_type = static_cast<uint8_t>(TransferType::NORMAL),
+                .data_set_size = 0,
+                .complete_access = 0,
+                .command_spec = static_cast<uint8_t>(SDOReqCommandSpecifier::DOWNLOAD)},
+            .index = index,
+            .subindex = subindex };
+        CompleteSize complete_size{custom_tuple<DataTypes...>::size};
+
+        send<TypeT, CoEElements, CompleteSize>(telegram, 0, 0, ProtocolType::CoE, elements, complete_size, data...);
+        receive<TypeT, CoEElements, CompleteSize, DataTypes...>(telegram, elements, complete_size);
+
+        if( (elements.coe_header.service != static_cast<uint8_t>(Service::SDO_RESPONSE)) ||
+            (elements.command_specifier.command_spec != static_cast<uint8_t>(SDOReqCommandSpecifier::UPLOAD)) ) {
+            DebugP_log("CoE error: = 0x%04x\r\n", complete_size.value); // 0x601004 - The object cannot be accessed via complete access
+        }
+
+        //DebugP_log("elements.coe_header.number = %d\r\n", elements.coe_header.number);
+        //DebugP_log("elements.coe_header.service = %d\r\n", elements.coe_header.service);
+        //DebugP_log("elements.command_specifier.size = %d\r\n", elements.command_specifier.size);
+        //DebugP_log("elements.command_specifier.transfer_type = %d\r\n", elements.command_specifier.transfer_type);
+        //DebugP_log("elements.command_specifier.data_set_size = %d\r\n", elements.command_specifier.data_set_size);
+        //DebugP_log("elements.command_specifier.complete_access = %d\r\n", elements.command_specifier.complete_access);
+        //DebugP_log("elements.command_specifier.command_spec = %d\r\n", elements.command_specifier.command_spec);
+        //DebugP_log("elements.index = %d\r\n", elements.index);
+        //DebugP_log("elements.subindex = %d\r\n", elements.subindex);
+        //DebugP_log("complete_size = %d\r\n", complete_size);
+
+        return complete_size;
+    }
+
+    template<typename TypeT, typename... DataTypes>
+    CompleteSize sdo_read(datagram::EcatTelegram& telegram, uint16_t index, uint8_t subindex, DataTypes&... data) {
         CoEElements elements{
             .coe_header = {
                 .number = 0x00,
@@ -323,6 +329,8 @@ public:
         //DebugP_log("elements.index = %d\r\n", elements.index);
         //DebugP_log("elements.subindex = %d\r\n", elements.subindex);
         //DebugP_log("complete_size = %d\r\n", complete_size);
+
+        return complete_size;
     }
 
     template<typename TypeT>
@@ -386,12 +394,26 @@ public:
     EthEcatSdoMailbox(ecat_buffer::EthEcatBuffer& ecat_buffer): ecat_buffer_{ecat_buffer} { }
 
     void init();
-    void pdo_map_read(uint16_t pdo_map_rx_index, uint16_t pdo_map_tx_index);
+    void read_pdo_map(uint16_t pdo_map_rx_index, uint16_t pdo_map_tx_index);
 
     std::vector<ecat_buffer::PDOMap>& get_pdo_map() {
         return pdo_map_;
     }
 
+    template<typename TypeT, typename... DataTypes>
+    CompleteSize sdo_write(size_t slave_index, uint16_t index, uint8_t subindex, DataTypes&... data) {
+        datagram::EcatTelegram& telegram = ecat_buffer_.get_ecat().get_telegram();
+
+        return sdo_mailbox_slaves_[slave_index].sdo_write<TypeT, DataTypes...>(telegram, index, subindex, data...);
+    }
+
+    template<typename TypeT, typename... DataTypes>
+    CompleteSize sdo_read(size_t slave_index, uint16_t index, uint8_t subindex, DataTypes&... data) {
+        datagram::EcatTelegram& telegram = ecat_buffer_.get_ecat().get_telegram();
+
+        return sdo_mailbox_slaves_[slave_index].sdo_read<TypeT, DataTypes...>(telegram, index, subindex, data...);
+    }
+
 private:
     ecat_buffer::EthEcatBuffer& ecat_buffer_;
 
diff --git a/components/free_rtos/ethernet_industry/eth_ecat.cpp b/components/free_rtos/ethernet_industry/eth_ecat.cpp
index 0ebc486..9e65a7b 100644
--- a/components/free_rtos/ethernet_industry/eth_ecat.cpp
+++ b/components/free_rtos/ethernet_industry/eth_ecat.cpp
@@ -122,10 +122,12 @@ uint16_t EthEcat::slaves_detecting() {
     return datagram.get_wkc();
 }
 
+// Setting Station address (FP) of slave via Position addressing (AP)
+// Station address is datagram data
 void EthEcat::set_addresses_of_slaves(uint16_t number_of_slaves, uint16_t address_base) {
-    // Setting Station address (FP) of slave via Position addressing (AP)
-    // Station address is datagram data
-    std::vector<datagram::EcatDatagram<command::APWR, address::Station>> datagrams;
+    using TDatagram = datagram::EcatDatagram<command::APWR, address::Station>;
+
+    std::vector<TDatagram> datagrams;
 
     slaves_.reserve(number_of_slaves);
     datagrams.reserve(number_of_slaves);
@@ -135,9 +137,9 @@ void EthEcat::set_addresses_of_slaves(uint16_t number_of_slaves, uint16_t addres
         address::Station station{static_cast<uint16_t>(address_base + i)};
         address::SlaveAddresses slave_addresses{position, 0x0000, station, 0x00000000};
 
-        slaves_.push_back(EcatSlave{std::move(slave_addresses)});
+        slaves_.emplace_back(EcatSlave{std::move(slave_addresses)});
 
-        datagrams.push_back({ {{position, ECT_REG_STADR}},  slaves_.back().get_slave_address<command::FP>() });
+        datagrams.emplace_back(TDatagram{ {{position, ECT_REG_STADR}},  slaves_.back().get_slave_address<command::FP>() });
     }
 
     for(uint16_t i = 1; i < number_of_slaves; i++) {
@@ -150,13 +152,15 @@ void EthEcat::set_addresses_of_slaves(uint16_t number_of_slaves, uint16_t addres
 }
 
 void EthEcat::get_addresses_of_slaves() {
-    std::vector<datagram::EcatDatagram<command::APRD, address::Station>> datagrams;
+    using TDatagram = datagram::EcatDatagram<command::APRD, address::Station>;
+
+    std::vector<TDatagram> datagrams;
     uint16_t number_of_slaves = slaves_.size();
 
     datagrams.reserve(number_of_slaves);
 
     for(EcatSlave& slave : slaves_) {
-        datagrams.push_back({ {{slave.get_slave_address<command::AP>(), ECT_REG_STADR}}, slave.get_slave_address<command::FP>() });
+        datagrams.emplace_back(TDatagram{ {{slave.get_slave_address<command::AP>(), ECT_REG_STADR}}, slave.get_slave_address<command::FP>() });
     }
 
     for(uint16_t i = 1; i < number_of_slaves; i++) {
@@ -172,14 +176,14 @@ void EthEcat::get_addresses_of_slaves() {
     }
 }
 
-uint16_t EthEcat::config_init() {
+uint16_t EthEcat::config_init(uint16_t address_base) {
     DebugP_log("Initializing slaves...\r\n");
 
     set_slaves_to_default();
     uint16_t number_of_slaves = slaves_detecting();
     DebugP_log("number_of_slaves = %d\r\n", number_of_slaves);
 
-    set_addresses_of_slaves(number_of_slaves, 0x1000);
+    set_addresses_of_slaves(number_of_slaves, address_base);
     get_addresses_of_slaves();
 
     return number_of_slaves;
diff --git a/components/free_rtos/ethernet_industry/eth_ecat.hpp b/components/free_rtos/ethernet_industry/eth_ecat.hpp
index 9f503dc..5d582cb 100644
--- a/components/free_rtos/ethernet_industry/eth_ecat.hpp
+++ b/components/free_rtos/ethernet_industry/eth_ecat.hpp
@@ -213,7 +213,7 @@ public:
     void set_addresses_of_slaves(uint16_t number_of_slaves, uint16_t address_base);
     void get_addresses_of_slaves();
 
-    uint16_t config_init();
+    uint16_t config_init(uint16_t address_base);
 
     void enable_PDI();
 
diff --git a/components/free_rtos/ethernet_industry/eth_ecat_api.cpp b/components/free_rtos/ethernet_industry/eth_ecat_api.cpp
new file mode 100644
index 0000000..f95bc9b
--- /dev/null
+++ b/components/free_rtos/ethernet_industry/eth_ecat_api.cpp
@@ -0,0 +1,103 @@
+/*
+ * eth_ecat_api.cpp
+ *
+ *  Created on: May 29, 2023
+ *      Author: algin
+ */
+
+#include "ethernet_industry/eth_ecat_api.hpp"
+
+namespace free_rtos {
+
+Eth *EthEcatApi::eth_{nullptr};
+
+bool EthEcatApi::init(Eth& eth, TEthMacPorts port_id, uint16_t address_base) {
+    eth_ = &eth;
+
+    bool status = false;
+
+    get_ecat().Init(port_id);
+
+    get_ecat().config_init(address_base);
+
+    get_ecat_buffer_sdo().init(ECT_SII_RXMBXADR, ECT_SII_TXMBXADR);
+    get_ecat_buffer_sdo().init_sync_manager(sync_manager::SYNC_M0, sync_manager::SYNC_M1);
+
+    get_ecat_buffer_pdo().init(ECT_PDOOUTPUTADR, ECT_PDOINPUTADR);
+
+    get_ecat().enable_PDI();
+
+    status = get_ecat().init_to_preop();
+
+    if(status != true) {
+        return status;
+    }
+
+    get_ecat_sdo_mailbox().init();
+    get_ecat_sdo_mailbox().read_pdo_map(ECT_RXPDOMAPINDEX, ECT_TXPDOMAPINDEX);
+
+    // Override buffer properties from eeprom for PDO
+    #ifdef COMX
+    get_ecat_buffer_pdo().set_buffer_offset(get_ecat_sdo_mailbox().get_pdo_map());
+    #endif
+    get_ecat_buffer_pdo().set_buffer_length(get_ecat_sdo_mailbox().get_pdo_map());
+
+    get_ecat_buffer_pdo().init_sync_manager(sync_manager::SYNC_M2, sync_manager::SYNC_M3);
+    get_ecat_buffer_pdo().init_fmmu(fmmu::FMMU0, fmmu::FMMU1);
+
+    get_ecat_pdo_fmmu().init();
+
+    status = get_ecat().preop_to_safeop();
+
+    if(status != true) {
+        return status;
+    }
+
+    status = get_ecat().safeop_to_op();
+
+    if(status != true) {
+        return status;
+    }
+
+    return status;
+}
+
+void EthEcatApi::process() {
+    get_ecat_pdo_fmmu().process();
+}
+
+std::vector<ecat_buffer::PDOMap>& EthEcatApi::get_ecat_pdo_map() {
+    return get_ecat_sdo_mailbox().get_pdo_map();
+}
+
+EthEcat& EthEcatApi::get_ecat() {
+    static EthEcat ecat{*eth_};
+
+    return ecat;
+}
+
+ecat_buffer::EthEcatBuffer& EthEcatApi::get_ecat_buffer_sdo() {
+    static ecat_buffer::EthEcatBuffer ecat_buffer_sdo{get_ecat()};
+
+    return ecat_buffer_sdo;
+}
+
+ecat_buffer::EthEcatBuffer& EthEcatApi::get_ecat_buffer_pdo() {
+    static ecat_buffer::EthEcatBuffer ecat_buffer_pdo{get_ecat()};
+
+    return ecat_buffer_pdo;
+}
+
+ecat_sdo_mailbox::EthEcatSdoMailbox& EthEcatApi::get_ecat_sdo_mailbox() {
+    static ecat_sdo_mailbox::EthEcatSdoMailbox ecat_sdo_mailbox{get_ecat_buffer_sdo()};
+
+    return ecat_sdo_mailbox;
+}
+
+ecat_pdo_fmmu::EthEcatPdoFMMU& EthEcatApi::get_ecat_pdo_fmmu() {
+    static ecat_pdo_fmmu::EthEcatPdoFMMU ecat_pdo_fmmu{get_ecat_buffer_pdo()};
+
+    return ecat_pdo_fmmu;
+}
+
+}
diff --git a/components/free_rtos/ethernet_industry/eth_ecat_api.hpp b/components/free_rtos/ethernet_industry/eth_ecat_api.hpp
new file mode 100644
index 0000000..4e487fe
--- /dev/null
+++ b/components/free_rtos/ethernet_industry/eth_ecat_api.hpp
@@ -0,0 +1,68 @@
+/*
+ * eth_ecat_api.hpp
+ *
+ *  Created on: May 29, 2023
+ *      Author: algin
+ */
+
+#ifndef FREE_RTOS_ETHERNET_INDUSTRY_ETH_ECAT_API_HPP_
+#define FREE_RTOS_ETHERNET_INDUSTRY_ETH_ECAT_API_HPP_
+
+#define COMX 1
+
+#include "ethernet/eth.hpp"
+#include "ethernet_industry/eth_ecat.hpp"
+#include "ethernet_industry/eth_ecat_buffer.hpp"
+#include "ethernet_industry/CoE/eth_ecat_sdo_mailbox.hpp"
+#include "ethernet_industry/CoE/eth_ecat_pdo_fmmu.hpp"
+
+namespace free_rtos {
+
+class EthEcatApi {
+public:
+    static bool init(Eth& eth, TEthMacPorts port_id, uint16_t address_base);
+    static void process(); // Внутри бесконечный цикл. Запускать в отдельном потоке
+
+    std::vector<ecat_buffer::PDOMap>& get_ecat_pdo_map();
+
+    template<typename... DataTypes>
+    static ecat_sdo_mailbox::CompleteSize sdo_write(size_t slave_index, uint16_t index, uint8_t subindex, DataTypes&... data) {
+        return get_ecat_sdo_mailbox().sdo_write<command::FP, DataTypes...>(slave_index, index, subindex, data...);
+    }
+
+    template<typename... DataTypes>
+    static ecat_sdo_mailbox::CompleteSize sdo_read(size_t slave_index, uint16_t index, uint8_t subindex, DataTypes&... data) {
+        return get_ecat_sdo_mailbox().sdo_read<command::FP, DataTypes...>(slave_index, index, subindex, data...);
+    }
+
+    template<typename... DataTypes>
+    static void pdo_write(address::Offset offset, DataTypes&... data) {
+        get_ecat_pdo_fmmu().pdo_write<DataTypes...>(offset, data...);
+    }
+
+    template<typename... DataTypes>
+    static void pdo_read(address::Offset offset, DataTypes&... data) {
+        get_ecat_pdo_fmmu().pdo_read<DataTypes...>(offset, data...);
+    }
+
+    static void pdo_write_async(pdo_promise::IPDOPromise& promise) {
+        get_ecat_pdo_fmmu().pdo_write_async(promise);
+    }
+
+    static void pdo_read_async(pdo_promise::IPDOPromise& promise) {
+        get_ecat_pdo_fmmu().pdo_read_async(promise);
+    }
+
+private:
+    static Eth *eth_;
+
+    static EthEcat& get_ecat();
+    static ecat_buffer::EthEcatBuffer& get_ecat_buffer_sdo();
+    static ecat_buffer::EthEcatBuffer& get_ecat_buffer_pdo();
+    static ecat_sdo_mailbox::EthEcatSdoMailbox& get_ecat_sdo_mailbox();
+    static ecat_pdo_fmmu::EthEcatPdoFMMU& get_ecat_pdo_fmmu();
+};
+
+}
+
+#endif /* FREE_RTOS_ETHERNET_INDUSTRY_ETH_ECAT_API_HPP_ */
diff --git a/components/free_rtos/ethernet_industry/eth_ecat_buffer.cpp b/components/free_rtos/ethernet_industry/eth_ecat_buffer.cpp
index d800f11..a04f63b 100644
--- a/components/free_rtos/ethernet_industry/eth_ecat_buffer.cpp
+++ b/components/free_rtos/ethernet_industry/eth_ecat_buffer.cpp
@@ -14,9 +14,6 @@ namespace ecat_buffer {
 constexpr std::array<SyncManager, 4> EcatBufferSlave::sync_managers_;
 constexpr std::array<address::Offset, 4> EcatBufferSlave::fmmu_regs_;
 
-uint32_t EcatBufferSlave::logical_full_length_write_{0x00000000};
-uint32_t EcatBufferSlave::logical_full_length_read_{0x00000000};
-
 void EthEcatBuffer::init(uint16_t rx_eeprom_addr, uint16_t tx_eeprom_addr) {
     std::vector<EcatSlave>& slaves = ecat_.get_slaves();
     eeprom::EEPROM& eeprom = ecat_.get_eeprom();
@@ -24,7 +21,7 @@ void EthEcatBuffer::init(uint16_t rx_eeprom_addr, uint16_t tx_eeprom_addr) {
     buffer_slaves_.reserve(slaves.size());
 
     for(EcatSlave& slave : slaves) {
-        buffer_slaves_.push_back(EcatBufferSlave{slave});
+        buffer_slaves_.emplace_back(EcatBufferSlave{slave});
     }
 
     for(EcatBufferSlave& buffer_slave : buffer_slaves_) {
@@ -44,7 +41,11 @@ void EthEcatBuffer::init_fmmu(fmmu fmmu_write, fmmu fmmu_read) {
     datagram::EcatTelegram& telegram = ecat_.get_telegram();
 
     for(EcatBufferSlave& buffer_slave : buffer_slaves_) {
-        buffer_slave.init_fmmu<command::FP>(telegram, fmmu_write, fmmu_read);
+        buffer_slave.init_fmmu_write<command::FP>(telegram, fmmu_write, fmmu_global_properties_);
+    }
+
+    for(EcatBufferSlave& buffer_slave : buffer_slaves_) {
+        buffer_slave.init_fmmu_read<command::FP>(telegram, fmmu_read, fmmu_global_properties_);
     }
 }
 
diff --git a/components/free_rtos/ethernet_industry/eth_ecat_buffer.hpp b/components/free_rtos/ethernet_industry/eth_ecat_buffer.hpp
index a6896a3..e1010f7 100644
--- a/components/free_rtos/ethernet_industry/eth_ecat_buffer.hpp
+++ b/components/free_rtos/ethernet_industry/eth_ecat_buffer.hpp
@@ -48,7 +48,7 @@ object_descriptor
 */
 
 struct PDODescriptor {
-    uint8_t size;
+    uint8_t size; // Размер в битах !
     uint8_t subindex;
     uint16_t index;
 } __attribute__ ((packed));
@@ -62,6 +62,14 @@ struct PDOMap {
     uint16_t pdo_input_offset{ECT_PDOINPUTOFFSET};
 };
 
+struct FMMUGlobalProperties {
+    address::Logical logical_start_address{0x00000000};
+    address::Logical logical_end_address{logical_start_address};
+
+    uint32_t logical_full_length_write{0x00000000};
+    uint32_t logical_full_length_read{0x00000000};
+};
+
 struct FMMUSettings {
     uint32_t log_start_address;
     uint16_t log_data_len;
@@ -139,14 +147,6 @@ public:
         return fmmu_properties_read_;
     }
 
-    uint32_t get_logical_full_length_write() {
-        return logical_full_length_write_;
-    }
-
-    uint32_t get_logical_full_length_read() {
-        return logical_full_length_read_;
-    }
-
     template<typename TypeT>
     void read_buffer_info_from_eeprom(eeprom::EEPROM& eeprom, uint16_t rx_eeprom_addr, uint16_t tx_eeprom_addr) {
         auto slave_address = slave_.get_slave_address<TypeT>();
@@ -164,11 +164,11 @@ public:
     template<typename TypeT>
     datagram::EcatDatagram<command::EcatCommand<TypeT, command::WR>, BufferProperties, uint32_t>
     make_sync_manager_datagram(SyncManager& sync_manager, BufferProperties& buffer) {
+        using TDatagram = datagram::EcatDatagram<command::EcatCommand<TypeT, command::WR>, BufferProperties, uint32_t>;
+
         auto slave_address = slave_.get_slave_address<TypeT>();
 
-        return datagram::EcatDatagram<command::EcatCommand<TypeT, command::WR>, BufferProperties, uint32_t>{    {{slave_address, sync_manager.offset}},
-                                                                                                                buffer,
-                                                                                                                sync_manager.default_setting };
+        return TDatagram{ {{slave_address, sync_manager.offset}}, buffer, sync_manager.default_setting };
     }
 
     template<typename TypeT>
@@ -203,20 +203,77 @@ public:
     template<typename TypeT>
     datagram::EcatDatagram<command::EcatCommand<TypeT, command::WR>, FMMUSettings>
     make_fmmu_datagram(fmmu fmmu_x, FMMUSettings& settings) {
-        auto slave_address = slave_.get_slave_address<TypeT>();
+        using TDatagram = datagram::EcatDatagram<command::EcatCommand<TypeT, command::WR>, FMMUSettings>;
 
-        return datagram::EcatDatagram<command::EcatCommand<TypeT, command::WR>, FMMUSettings>{ {{slave_address, fmmu_regs_[static_cast<size_t>(fmmu_x)]}}, settings};
+        auto slave_address = slave_.get_slave_address<TypeT>();
+        address::Offset offset = fmmu_regs_[static_cast<size_t>(fmmu_x)];
+
+        return TDatagram{ {{slave_address, offset}}, settings};
     }
 
     template<typename TypeT>
-    void init_fmmu(datagram::EcatTelegram& telegram, fmmu fmmu_write, fmmu fmmu_read) {
-        static address::Logical logical_end_address{logical_start_address_};
+    void init_fmmu_write(datagram::EcatTelegram& telegram, fmmu fmmu, FMMUGlobalProperties& fmmu_global_properties) {
+        fmmu_write_ = fmmu;
 
+        FMMUSettings settings {
+            .log_start_address = fmmu_global_properties.logical_end_address,
+            .log_data_len = buffer_properties_write_.length,
+            .log_start_bit = 0,
+            .log_end_bit = 7,
+            .phys_start_address = buffer_properties_write_.offset,
+            .phys_start_bit = 0,
+            .direction = static_cast<uint8_t>(DataDirection::WRITE),
+            .activate = 0x01
+        };
+
+        auto datagram = make_fmmu_datagram<TypeT>(fmmu, settings);
+
+        fmmu_properties_write_.address = fmmu_global_properties.logical_end_address;
+        fmmu_properties_write_.length = buffer_properties_write_.length;
+
+        fmmu_global_properties.logical_end_address += buffer_properties_write_.length;
+        fmmu_global_properties.logical_full_length_write += buffer_properties_write_.length;
+
+        do {
+            telegram.transfer(datagram);
+        } while(datagram.get_wkc() < 0x0001);
+    }
+
+    template<typename TypeT>
+    void init_fmmu_read(datagram::EcatTelegram& telegram, fmmu fmmu, FMMUGlobalProperties& fmmu_global_properties) {
+        fmmu_read_ = fmmu;
+
+        FMMUSettings settings {
+            .log_start_address = fmmu_global_properties.logical_end_address,
+            .log_data_len = buffer_properties_read_.length,
+            .log_start_bit = 0,
+            .log_end_bit = 7,
+            .phys_start_address = buffer_properties_read_.offset,
+            .phys_start_bit = 0,
+            .direction = static_cast<uint8_t>(DataDirection::READ),
+            .activate = 0x01
+        };
+
+        auto datagram = make_fmmu_datagram<TypeT>(fmmu, settings);
+
+        fmmu_properties_read_.address = fmmu_global_properties.logical_end_address;
+        fmmu_properties_read_.length = buffer_properties_read_.length;
+
+        fmmu_global_properties.logical_end_address += buffer_properties_read_.length;
+        fmmu_global_properties.logical_full_length_read += buffer_properties_read_.length;
+
+        do {
+            telegram.transfer(datagram);
+        } while(datagram.get_wkc() < 0x0001);
+    }
+
+    template<typename TypeT>
+    void init_fmmu(datagram::EcatTelegram& telegram, fmmu fmmu_write, fmmu fmmu_read, FMMUGlobalProperties& fmmu_global_properties) {
         fmmu_write_ = fmmu_write;
         fmmu_read_ = fmmu_read;
 
         FMMUSettings settings_write {
-            .log_start_address = logical_end_address,
+            .log_start_address =  fmmu_global_properties.logical_end_address,
             .log_data_len = buffer_properties_write_.length,
             .log_start_bit = 0,
             .log_end_bit = 7,
@@ -228,13 +285,14 @@ public:
 
         auto datagram_write = make_fmmu_datagram<TypeT>(fmmu_write, settings_write);
 
-        fmmu_properties_write_.address = logical_end_address;
+        fmmu_properties_write_.address = fmmu_global_properties.logical_end_address;
         fmmu_properties_write_.length = buffer_properties_write_.length;
-        logical_full_length_write_ += buffer_properties_write_.length;
-        logical_end_address += buffer_properties_write_.length;
+
+        fmmu_global_properties.logical_end_address += buffer_properties_write_.length;
+        fmmu_global_properties.logical_full_length_write += buffer_properties_write_.length;
 
         FMMUSettings settings_read {
-            .log_start_address = logical_end_address,
+            .log_start_address =  fmmu_global_properties.logical_end_address,
             .log_data_len = buffer_properties_read_.length,
             .log_start_bit = 0,
             .log_end_bit = 7,
@@ -246,10 +304,11 @@ public:
 
         auto datagram_read = make_fmmu_datagram<TypeT>(fmmu_read, settings_read);
 
-        fmmu_properties_read_.address = logical_end_address;
+        fmmu_properties_read_.address = fmmu_global_properties.logical_end_address;
         fmmu_properties_read_.length = buffer_properties_read_.length;
-        logical_full_length_read_ += buffer_properties_read_.length;
-        logical_end_address += buffer_properties_read_.length;
+
+        fmmu_global_properties.logical_end_address += buffer_properties_read_.length;
+        fmmu_global_properties.logical_full_length_read += buffer_properties_read_.length;
 
         datagram_write + datagram_read;
 
@@ -284,11 +343,6 @@ private:
         ECT_REG_FMMU3
     }};
 
-    static constexpr uint32_t logical_start_address_{0x00000000};
-
-    static uint32_t logical_full_length_write_;
-    static uint32_t logical_full_length_read_;
-
     std::array<address::Offset, 4> buffer_regs_ = {
         static_cast<address::Offset>(0x0000),
         static_cast<address::Offset>(0x0000),
@@ -318,12 +372,16 @@ public:
         return ecat_;
     }
 
-    std::vector<EcatBufferSlave>& get_buffer_slaves()
+    void init(uint16_t rx_eeprom_addr, uint16_t tx_eeprom_addr);
+
+        std::vector<EcatBufferSlave>& get_buffer_slaves()
     {
         return buffer_slaves_;
     }
 
-    void init(uint16_t rx_eeprom_addr, uint16_t tx_eeprom_addr);
+    FMMUGlobalProperties& get_fmmu_global_properties() {
+        return fmmu_global_properties_;
+    }
 
     void set_buffer_offset(std::vector<PDOMap>& pdo_map) {
         uint32_t i = 0;
@@ -349,6 +407,8 @@ public:
 private:
     EthEcat& ecat_;
 
+    FMMUGlobalProperties fmmu_global_properties_;
+
     std::vector<EcatBufferSlave> buffer_slaves_;
 };
 
diff --git a/components/free_rtos/ethernet_industry/eth_ecat_command.hpp b/components/free_rtos/ethernet_industry/eth_ecat_command.hpp
index 3018a61..42eb17b 100644
--- a/components/free_rtos/ethernet_industry/eth_ecat_command.hpp
+++ b/components/free_rtos/ethernet_industry/eth_ecat_command.hpp
@@ -26,17 +26,17 @@ using Broadcast         = uint16_t;
 using Station           = uint16_t;
 using Logical           = uint32_t;
 
-using SlaveAddresses = free_rtos::custom_tuple<Position, Broadcast, Station, Logical>;
+using SlaveAddresses = custom_tuple<Position, Broadcast, Station, Logical>;
 
 // Register offset
 using Offset = uint16_t;
 
-using PositionAddress    = free_rtos::custom_tuple<Position, Offset>;
-using BroadcastAddress   = free_rtos::custom_tuple<Broadcast, Offset>;
-using StationAddress     = free_rtos::custom_tuple<Station, Offset>;
-using LogicalAddress     = free_rtos::custom_tuple<Logical>;
+using PositionAddress    = custom_tuple<Position, Offset>;
+using BroadcastAddress   = custom_tuple<Broadcast, Offset>;
+using StationAddress     = custom_tuple<Station, Offset>;
+using LogicalAddress     = custom_tuple<Logical>;
 
-using Addresses = free_rtos::custom_tuple<PositionAddress, BroadcastAddress, StationAddress, LogicalAddress>;
+using Addresses = custom_tuple<PositionAddress, BroadcastAddress, StationAddress, LogicalAddress>;
 
 } // namespace address
 
@@ -79,8 +79,8 @@ struct TypeBase {
 
 template<TYPE_INDEX type_index>
 struct Type : public TypeBase {
-    using TAddress = typename free_rtos::custom_tuple_element<static_cast<size_t>(type_index), address::Addresses>::type;
-    using TSlaveAddress = typename free_rtos::custom_tuple_element<0, TAddress>::type;
+    using TAddress = typename custom_tuple_element<static_cast<size_t>(type_index), address::Addresses>::type;
+    using TSlaveAddress = typename custom_tuple_element<0, TAddress>::type;
 
     static constexpr TYPE_INDEX type = type_index;
 };
@@ -123,7 +123,7 @@ class EcatCommand : public EcatCommandBase {
     static_assert(std::is_base_of<DirBase, DirT>::value == true, "DirT should be derived from command::DirBase");
 
 public:
-    EcatCommand(typename TypeT::TAddress address)
+    EcatCommand(typename TypeT::TAddress&& address)
     : EcatCommandBase{TypeT::type, DirT::dir}
     , address_{address} { }
 
@@ -131,8 +131,9 @@ public:
 
     uint32_t get_address() {
         uint32_t address{0x00000000};
+        PackFunctor functor{reinterpret_cast<uint8_t*>(&address)};
 
-        address_.pack(reinterpret_cast<uint8_t*>(&address));
+        for_each(address_, functor);
 
         return address;
     }
diff --git a/components/free_rtos/ethernet_industry/eth_ecat_custom_tuple.hpp b/components/free_rtos/ethernet_industry/eth_ecat_custom_tuple.hpp
index a44c906..79196fc 100644
--- a/components/free_rtos/ethernet_industry/eth_ecat_custom_tuple.hpp
+++ b/components/free_rtos/ethernet_industry/eth_ecat_custom_tuple.hpp
@@ -8,13 +8,15 @@
 #ifndef FREE_RTOS_ETHERNET_INDUSTRY_ETH_ECAT_CUSTOM_TUPLE_HPP_
 #define FREE_RTOS_ETHERNET_INDUSTRY_ETH_ECAT_CUSTOM_TUPLE_HPP_
 
+#include <vector>
+
 namespace free_rtos {
 
 // Базовый шаблон класса, никогда не инстанциируется, поэтому без тела
 template<typename... Args>
 struct custom_tuple;
 
-// Основная специализация шаблона. Есть еще одна для протокола CoE.
+// Основная специализация шаблона
 template<typename HeadT, typename... TailT>
 struct custom_tuple<HeadT, TailT...> : custom_tuple<TailT...> {
     custom_tuple(HeadT head, TailT... tail)
@@ -31,111 +33,155 @@ struct custom_tuple<HeadT, TailT...> : custom_tuple<TailT...> {
     constexpr static size_t size = sizeof(THeadDeref) + TBase::size;
 
     THead head_;
-
-    uint8_t* pack(uint8_t *raw) {
-        THeadDeref *head = new(raw) THeadDeref{head_};
-
-        (void)head;
-
-        return TBase::pack(raw + sizeof(THeadDeref));
-    }
-
-    uint8_t* unpack(uint8_t *raw) {
-        THeadDeref *head = reinterpret_cast<THeadDeref*>(raw);
-
-        head_ = *head;
-
-        return TBase::unpack(raw + sizeof(THeadDeref));
-    }
-
-    template<typename FunctorT>
-    void for_each(FunctorT& functor) {
-        functor(head_);
-        TBase::template for_each<FunctorT>(functor, head_);
-    }
-
-    template<typename FunctorT, typename PreviousT>
-    void for_each(FunctorT& functor, PreviousT& previous) {
-        functor(head_, previous);
-        TBase::template for_each<FunctorT>(functor, head_);
-    }
-
-    template<typename FunctorT>
-    void for_each_reverse(FunctorT& functor) {
-        TBase::template for_each_reverse<FunctorT>(functor, head_);
-        functor(head_);
-    }
-
-    template<typename FunctorT, typename PreviousT>
-    void for_each_reverse(FunctorT& functor, PreviousT& previous) {
-        TBase::template for_each_reverse<FunctorT>(functor, head_);
-        functor(head_, previous);
-    }
 };
 
 // Специализация завершения рекурсии
 template<>
 struct custom_tuple<> {
     constexpr static size_t size = 0;
-
-    uint8_t* pack(uint8_t *raw) {
-        return raw;
-    }
-
-    uint8_t* unpack(uint8_t *raw) {
-        return raw;
-    }
-
-    // Вызывается для пустого custom_tuple. Не особо полезно, но пускай будет
-    template<typename FunctorT>
-    void for_each_forward(FunctorT& functor) {
-        functor();
-    }
-
-    template<typename FunctorT, typename PreviousT>
-    void for_each_forward(FunctorT& functor, PreviousT& previous) {
-        functor(previous, 0);
-    }
-
-    // Вызывается для пустого custom_tuple. Не особо полезно, но пускай будет
-    template<typename FunctorT>
-    void for_each_reverse(FunctorT& functor) {
-        functor();
-    }
-
-    template<typename FunctorT, typename PreviousT>
-    void for_each_reverse(FunctorT& functor, PreviousT& previous) {
-        functor(previous, 0);
-    }
 };
 
+
+// Базовый шаблон класса, никогда не инстанциируется, поэтому без тела
 template<size_t index, typename TupleT>
 struct custom_tuple_element;
 
 template<size_t index, typename HeadT, typename... TailT>
 struct custom_tuple_element<index, custom_tuple<HeadT, TailT...>> {
-    using TBase = custom_tuple_element<index - 1, custom_tuple<TailT...>>;
+    using TTuple = custom_tuple<HeadT, TailT...>;
+    using TBase = custom_tuple_element<index - 1, typename TTuple::TBase>;
     using type = typename TBase::type;
 
-    static type& get(custom_tuple<HeadT, TailT...>& t) {
+    static type& get(TTuple& t) {
         return TBase::get(t);
     }
 };
 
+// Специализация завершения рекурсии
 template<typename HeadT, typename... TailT>
 struct custom_tuple_element<0, custom_tuple<HeadT, TailT...>> {
+    using TTuple = custom_tuple<HeadT, TailT...>;
     using type = HeadT;
 
-    static type& get(custom_tuple<HeadT, TailT...>& t) {
+    static type& get(TTuple& t) {
         return t.head_;
     }
 };
 
+// Функция получения элемента custom_tuple по индексу
 template<size_t index, typename TupleT>
 typename custom_tuple_element<index, TupleT>::type& get(TupleT& t) {
     return custom_tuple_element<index, TupleT>::get(t);
 }
 
+
+// Базовый шаблон класса, никогда не инстанциируется, поэтому без тела
+template<typename FunctorT, typename TupleT>
+struct each_tuple_element;
+
+// Основная специализация шаблона. Есть еще одна в протоколе CoE SDO !
+template<typename FunctorT, typename HeadT, typename... TailT>
+struct each_tuple_element<FunctorT, custom_tuple<HeadT, TailT...>> {
+    using TTuple = custom_tuple<HeadT, TailT...>;
+    using TBase = each_tuple_element<FunctorT, typename TTuple::TBase>;
+
+    static void for_each(FunctorT& functor, TTuple& t) {
+        functor(t.head_);
+        TBase::for_each(functor, t);
+    }
+
+    static void for_each_reverse(FunctorT& functor, TTuple& t) {
+        TBase::for_each_reverse(functor, t);
+        functor(t.head_);
+    }
+};
+
+// Специализация завершения рекурсии
+template<typename FunctorT>
+struct each_tuple_element<FunctorT, custom_tuple<>> {
+    using TTuple = custom_tuple<>;
+
+    static void for_each(FunctorT& functor, TTuple& t) { }
+    static void for_each_reverse(FunctorT& functor, TTuple& t) { }
+};
+
+// Функция для обхода элементов custom_tuple
+template<typename TupleT, typename FunctorT>
+void for_each(TupleT& t, FunctorT& functor) {
+    each_tuple_element<FunctorT, TupleT>::for_each(functor, t);
+    functor();
+}
+
+// Функция для обратного обхода элементов custom_tuple
+template<typename TupleT, typename FunctorT>
+void for_each_reverse(TupleT& t, FunctorT& functor) {
+    each_tuple_element<FunctorT, TupleT>::for_each_reverse(functor, t);
+    functor();
+}
+
+
+struct Padding {
+    size_t size;
+};
+
+// Функтор для обхода и упаковки элементов custom_tuple
+struct PackFunctor {
+    uint8_t *raw;
+
+    template<typename DataT>
+    void operator()(DataT& data) {
+        DataT *data_p = new(raw) DataT{data};
+
+        (void)data_p;
+
+        raw += sizeof(DataT);
+    }
+
+    template<typename DataT>
+    void operator()(std::vector<DataT>& data) {
+        size_t size = data.size() * sizeof(DataT);
+
+        memcpy(raw, data.data(), size);
+
+        raw += size;
+    }
+
+    void operator()(Padding& padding) {
+        raw += padding.size;
+    }
+
+    void operator()() { }
+};
+
+// Функтор для обхода и распаковки элементов custom_tuple
+struct UnpackFunctor {
+    uint8_t *raw;
+
+    template<typename DataT>
+    void operator()(DataT& data) {
+        DataT *p_data = reinterpret_cast<DataT*>(raw);
+
+        data = *p_data;
+
+        raw += sizeof(DataT);
+    }
+
+    template<typename DataT>
+    void operator()(std::vector<DataT>& data) {
+        size_t size = data.size() * sizeof(DataT);
+
+        memcpy(data.data(), raw, size);
+
+        raw += size;
+    }
+
+    void operator()(Padding& padding) {
+        raw += padding.size;
+    }
+
+    void operator()() { }
+};
+
 }
 
 #endif /* FREE_RTOS_ETHERNET_INDUSTRY_ETH_ECAT_CUSTOM_TUPLE_HPP_ */
diff --git a/components/free_rtos/ethernet_industry/eth_ecat_datagram.cpp b/components/free_rtos/ethernet_industry/eth_ecat_datagram.cpp
index 9834149..e1b49d1 100644
--- a/components/free_rtos/ethernet_industry/eth_ecat_datagram.cpp
+++ b/components/free_rtos/ethernet_industry/eth_ecat_datagram.cpp
@@ -16,13 +16,13 @@ int32_t EcatTelegram::Process(uint8_t *p_data, uint32_t len) {
 
     //memcpy(buffer_in_.data, p_data - sizeof(TEthFrameHeader), buffer_in_.length);
 
-    if(first_ == nullptr) {
+    if(datagram_queue_ == nullptr) {
         return 0;
     }
 
     unpack(p_data);
 
-    first_ = nullptr;
+    datagram_queue_ = nullptr;
 
     rx_sem_.post();
 
@@ -38,7 +38,7 @@ void EcatTelegram::pack() {
                                                                                                     .type = static_cast<uint16_t>(ec_network::PROTOCOL_TYPE)}};
     uint8_t *p_datagram_first = buffer_out_.data + sizeof(TEthFrameHeader) + sizeof(TEcatFrameHeader);
     uint8_t *p_datagram_last = p_datagram_first;
-    IEcatDatagram *next = first_;
+    IEcatDatagram *next = datagram_queue_;
 
     (void)p_eth_hdr;
     (void)p_hdr;
@@ -57,7 +57,7 @@ void EcatTelegram::unpack(uint8_t *raw) {
     TEcatFrameHeader *p_hdr = reinterpret_cast<TEcatFrameHeader*>(raw + sizeof(TEthFrameHeader));
     uint8_t *p_datagram_first = raw + sizeof(TEthFrameHeader) + sizeof(TEcatFrameHeader);
     uint8_t *p_datagram_last = p_datagram_first;
-    IEcatDatagram *next = first_;
+    IEcatDatagram *next = datagram_queue_;
 
     (void)p_eth_hdr;
     (void)p_hdr;
@@ -69,7 +69,7 @@ void EcatTelegram::unpack(uint8_t *raw) {
 }
 
 void EcatTelegram::transfer(IEcatDatagram& first) {
-    first_ = &first;
+    datagram_queue_ = &first; // TODO: Доделать добавление в очередь более одного элемента
 
     pack();
     bool stat = tx_flow_.send(port_id_, buffer_out_.data, buffer_out_.length);
diff --git a/components/free_rtos/ethernet_industry/eth_ecat_datagram.hpp b/components/free_rtos/ethernet_industry/eth_ecat_datagram.hpp
index f2ec860..de9953a 100644
--- a/components/free_rtos/ethernet_industry/eth_ecat_datagram.hpp
+++ b/components/free_rtos/ethernet_industry/eth_ecat_datagram.hpp
@@ -45,7 +45,6 @@ public:
     }
 
     IEcatDatagram& set_next(IEcatDatagram &next) {
-
         return operator+(next);
     }
 
@@ -68,17 +67,11 @@ public:
         }
     }
 
-    // установка размера пробела после поля данных до wkc
-    void set_padding(uint16_t padding) {
-        padding_ = padding;
-    }
-
 protected:
     ec_moredatagrams more_;
-
     TEcatDgHeader header_;
     TEcatWkc wkc_;
-    uint16_t padding_{0x0000};
+
 private:
     IEcatDatagram *next_{nullptr};
 };
@@ -88,10 +81,10 @@ class EcatDatagram : public IEcatDatagram {
     static_assert(std::is_base_of<command::EcatCommandBase, CommandT>::value == true, "CommandT should be derived from ECatCommandBase");
 
 public:
-    EcatDatagram(CommandT command, DataTypes&... data)
+    EcatDatagram(CommandT&& command, DataTypes&... data)
     : IEcatDatagram{ec_moredatagrams::EC_MOREDATAGRAMS_LAST, 0x0000}
     , command_{command}
-    , data_{data...} { }
+    , data_tuple_{data...} { }
 
     EcatDatagram() { }
 
@@ -107,7 +100,7 @@ public:
 
 private:
     CommandT command_;
-    custom_tuple<DataTypes&...> data_;
+    custom_tuple<DataTypes&...> data_tuple_;
 
     uint8_t* pack_wkc(uint8_t *raw) {
         TEcatWkc *wkc = new(raw) TEcatWkc{0x0000};
@@ -117,19 +110,17 @@ private:
         return raw + sizeof(TEcatWkc);
     }
 
-    uint8_t* pack_padding(uint8_t *raw) {
-        //std::memset(raw, 0x00, padding_);
-
-        return raw + padding_;
-    }
-
     uint8_t* pack_data(uint8_t *raw) {
-        return pack_padding(data_.pack(raw));
+        PackFunctor functor{raw};
+
+        for_each(data_tuple_, functor);
+
+        return functor.raw;
     }
 
     uint8_t* pack_header(uint8_t *raw) {
         uint8_t *data_raw = raw + sizeof(TEcatDgHeader);
-        uint8_t *wkc_raw = pack_data(data_raw); // сначала упаковываем  все данные для вычислением их размера
+        uint8_t *wkc_raw = pack_data(data_raw); // сначала упаковываем  все данные для вычисления их размера
         uint16_t len = wkc_raw - data_raw;      // вычисляем размер данных
         TEcatDgHeader *header_ = new(raw) TEcatDgHeader{
             command_.get_cmd(),
@@ -154,12 +145,12 @@ private:
         return raw + sizeof(TEcatWkc);
     }
 
-    uint8_t* unpack_padding(uint8_t *raw) {
-        return unpack_wkc(raw + padding_);
-    }
-
     uint8_t* unpack_data(uint8_t *raw) {
-        return unpack_padding(data_.unpack(raw));
+        UnpackFunctor functor{raw};
+
+        for_each(data_tuple_, functor);
+
+        return functor.raw;
     }
 
     uint8_t* unpack_header(uint8_t *raw) {
@@ -194,10 +185,9 @@ private:
 
     free_rtos::Semaphore rx_sem_;
 
-    IEcatDatagram *first_{nullptr};
+    IEcatDatagram *datagram_queue_{nullptr};
 
     TEthPkt buffer_out_;
-    //TEthPkt buffer_in_;
 
     void pack();
     void unpack(uint8_t *raw);