diff --git a/.vscode/settings.json b/.vscode/settings.json
index a5aeafb..0938b59 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -18,6 +18,9 @@
     "string.h": "c",
     "*.ipp": "c",
     "cstring": "c",
-    "stddef.h": "c"
+    "stddef.h": "c",
+    "coroutine": "c",
+    "filo.h": "c",
+    "filo_type.h": "c"
   }
 }
\ No newline at end of file
diff --git a/src/fifo/fifo.c b/src/fifo/fifo.c
index 255b712..f6b7b01 100644
--- a/src/fifo/fifo.c
+++ b/src/fifo/fifo.c
@@ -7,8 +7,6 @@
 //   FIFO ERROR
 // }
 
-int FIFO_isUsable(fifo_s* fifo);
-
 // Инициализация fifo
 int FIFO_init(fifo_s* fifo) {
   if (fifo != NULL) {
@@ -16,6 +14,8 @@ int FIFO_init(fifo_s* fifo) {
       fifo->data[i] = 0;
     }
     fifo->head = 0;
+    fifo->tail = 0;
+    fifo->count = 0;
     fifo->state = FIFOS_empty;
     fifo->isInitialized = 1;
     if (FIFO_isUsable(fifo) == 0) {
@@ -30,14 +30,14 @@ int FIFO_init(fifo_s* fifo) {
 int FIFO_put(fifo_s* fifo, uint8_t data) {
   if (FIFO_isUsable(fifo) == 0) {  // Не заполнено
     if ((fifo->state == FIFOS_empty) || (fifo->state == FIFOS_ready)) {
-      fifo->data[fifo->head] = data;
-
-      if (fifo->head < FIFO_DATA_SIZE-1) {
-        fifo->head++;
+      fifo->data[fifo->tail] = data;
+      fifo->tail = (fifo->tail + 1) % FIFO_DATA_SIZE;
+      if (fifo->count < FIFO_DATA_SIZE - 1) {
+        fifo->count++;
         fifo->state = FIFOS_ready;
       } else {
-        fifo->head = FIFO_DATA_SIZE-1; 
-        fifo->state = FIFOS_full; 
+        fifo->count = FIFO_DATA_SIZE - 1;  
+        fifo->state = FIFOS_full;
       }
       return 0;
     }
@@ -50,17 +50,20 @@ int FIFO_put(fifo_s* fifo, uint8_t data) {
 int FIFO_get(fifo_s* fifo, uint8_t *data) {
   if (FIFO_isUsable(fifo) == 0) {
     if ((fifo->state == FIFOS_full) || (fifo->state == FIFOS_ready)) {
-      *data = fifo->data[fifo->head-1];
-      fifo->data[fifo->head-1] = 0;
-      if (fifo->head > 1) {
-        fifo->head--;
+      *data = fifo->data[fifo->head];
+      fifo->data[fifo->head] = 0;
+      fifo->head = (fifo->head + 1) % FIFO_DATA_SIZE;
+      if (fifo->count > 1) {
+        fifo->count--;
         fifo->state = FIFOS_ready;
       } else {
-        fifo->head = 0;  
+        fifo->count = 0;  
         fifo->state = FIFOS_empty;
+        return 1;
       }
       return 0;
     }
+    return 1;
   }
   return -1;
 }
diff --git a/src/fifo/fifo.h b/src/fifo/fifo.h
index d3a038d..6ac37d2 100644
--- a/src/fifo/fifo.h
+++ b/src/fifo/fifo.h
@@ -12,6 +12,8 @@
 typedef struct {
   uint8_t data[FIFO_DATA_SIZE];
   uint8_t head;
+  uint8_t tail;
+  uint8_t count;
   fifoState_e state;
   uint8_t isInitialized;
 } fifo_s;
diff --git a/src/filo/filo.c b/src/filo/filo.c
new file mode 100644
index 0000000..c30943c
--- /dev/null
+++ b/src/filo/filo.c
@@ -0,0 +1,90 @@
+#include "filo.h"
+#include "stdio.h"
+
+// if (FILO_get(filo, byte) == 0) {
+//   OK
+// } else {
+//   FILO ERROR
+// }
+
+int FILO_isUsable(filo_s* filo);
+
+// Инициализация filo
+int FILO_init(filo_s* filo) {
+  if (filo != NULL) {
+    for (size_t i = 0; i < FILO_DATA_SIZE; ++i) {
+      filo->data[i] = 0;
+    }
+    filo->head = 0;
+    filo->state = FILOS_empty;
+    filo->isInitialized = 1;
+    if (FILO_isUsable(filo) == 0) {
+      return 0;
+    }
+  }
+  return -1;
+}
+
+
+// Заполнение filo
+int FILO_put(filo_s* filo, uint8_t data) {
+  if (FILO_isUsable(filo) == 0) {  // Не заполнено
+    if ((filo->state == FILOS_empty) || (filo->state == FILOS_ready)) {
+      filo->data[filo->head] = data;
+
+      if (filo->head < FILO_DATA_SIZE-1) {
+        filo->head++;
+        filo->state = FILOS_ready;
+      } else {
+        filo->head = FILO_DATA_SIZE-1; 
+        filo->state = FILOS_full; 
+      }
+      return 0;
+    }
+  }
+  return -1;
+}
+
+
+// Получение из filo
+int FILO_get(filo_s* filo, uint8_t *data) {
+  if (FILO_isUsable(filo) == 0) {
+    if ((filo->state == FILOS_full) || (filo->state == FILOS_ready)) {
+      *data = filo->data[filo->head-1];
+      filo->data[filo->head-1] = 0;
+      if (filo->head > 1) {
+        filo->head--;
+        filo->state = FILOS_ready;
+      } else {
+        filo->head = 0;  
+        filo->state = FILOS_empty;
+      }
+      return 0;
+    }
+  }
+  return -1;
+}
+
+
+int FILO_print(filo_s* filo) {
+  if (FILO_isUsable(filo) == 0) {
+    printf("FILO: ");
+    for (size_t i = 0; i < FILO_DATA_SIZE; i++) {
+      printf("%d", filo->data[i]);
+    }
+    printf("\n");
+    return 0;
+  }
+  return -1;
+}
+
+
+// Проверка доступности filo
+int FILO_isUsable(filo_s* filo) {
+  if (filo != NULL) {
+    if (filo->isInitialized == 1) {
+      return 0;
+    }
+  }
+  return -1;
+}
\ No newline at end of file
diff --git a/src/filo/filo.h b/src/filo/filo.h
new file mode 100644
index 0000000..d5a93c8
--- /dev/null
+++ b/src/filo/filo.h
@@ -0,0 +1,27 @@
+#pragma once
+#ifndef FILO_H
+#define FILO_H
+
+#include "filo_type.h"
+#include <stddef.h>
+
+// Размер FILO
+#define FILO_DATA_SIZE 8
+
+// Структура FILO
+typedef struct {
+  uint8_t data[FILO_DATA_SIZE];
+  uint8_t head;
+  filoState_e state;
+  uint8_t isInitialized;
+} filo_s;
+
+
+// Функции FILO
+int FILO_init(filo_s* filo);
+int FILO_put(filo_s* filo, uint8_t data);
+int FILO_get(filo_s* filo, uint8_t *data);
+int FILO_print(filo_s* filo);
+int FILO_isUsable(filo_s* filo);
+
+#endif // FILO_H
\ No newline at end of file
diff --git a/src/filo/filo_type.h b/src/filo/filo_type.h
new file mode 100644
index 0000000..c0a79e1
--- /dev/null
+++ b/src/filo/filo_type.h
@@ -0,0 +1,16 @@
+#pragma once
+#ifndef FILO_TYPE_H
+#define FILO_TYPE_H
+
+#include <stdint.h>
+
+// Структура состояний FILO
+typedef enum {
+  FILOS_empty = 0,
+  FILOS_ready,
+  FILOS_full,
+  FILOS_error
+} filoState_e;
+
+
+#endif // FILO_TYPE_H
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 24e24ed..1e36554 100644
--- a/src/main.c
+++ b/src/main.c
@@ -11,36 +11,42 @@ enum bigLoopOsState_e {
 
 // Текстовые надписи соответствующие статусам машины состояния
 const char* bigLoopOsStateNames[OS_last] = {
-  "starting...",
+  "starting",
   "master worker",
   "slave worker",
-  "waiting"
+  "idle"
 };
 
 
 // BIG LOOP OS
 int main(void) {
+  // while(true){WORK_master();TOOL_msleep(1000);}
+
   bigLoopOsState = OS_first;
   while(true) {
-    if (bigLoopOsState == OS_last) {
-      bigLoopOsState = OS_first;
+    if (bigLoopOsState >= OS_last) {
+      bigLoopOsState = OS_masterWorker;
     }
 
     printf("OS: Current state is: %s\n", bigLoopOsStateNames[bigLoopOsState]);
     switch (bigLoopOsState) {
       case OS_first:
+        printf("\n\n");
       break;
 
       case OS_masterWorker:
         WORK_master();
+        printf("\n\n");
       break;
 
       case OS_slaveWorker:
         WORK_slave();
+        printf("\n\n");
       break;
 
       case OS_wait:
         TOOL_msleep(1000);
+        printf("\n\n");
       break;
 
       default:
diff --git a/src/main.h b/src/main.h
index a0e4fa5..ee5d20c 100644
--- a/src/main.h
+++ b/src/main.h
@@ -12,6 +12,7 @@
 // Конфигурация
 static const uint16_t hdlcMasterAddress = 0b10000000;
 static const uint16_t hdlcSlaveAddress = 0b11000000;
+static const uint16_t xorByte = 0xaf;
 
 // Вспомогательные функции
 uint16_t CRC16_compute(uint8_t *data, size_t length);
diff --git a/src/worker/worker.c b/src/worker/worker.c
index 722e08a..0ce5157 100644
--- a/src/worker/worker.c
+++ b/src/worker/worker.c
@@ -6,13 +6,45 @@
 #include "fifo.h"
 
 
+workerHost_s* WORK_workerInit (workerHost_s* worker,
+  hdlcPacket_s* packet, fifo_s* fifo, uint8_t* buffer) {
+  if (!worker->isInitialized) {
+    printf("WORKX: Starting master worker initialization\n");
+    worker->packet = packet;
+    worker->fifo = fifo;
+    worker->isInitialized = true;
+    worker->byteBuffer = buffer;
+    
+    FIFO_init(worker->fifo);
+
+    if (DO_UNIT_TESTS){WORK_testFifo(worker->fifo);} 
+
+    printf("WORKX: Master initialization done\n");
+    WORK_printBlocks(worker, 3);
+    
+    return worker;
+  }
+
+  // Ошибка в пакете, повторная инициализация
+  worker->isInitialized = false;
+  return NULL;
+
+}
+
+
+int WORK_waitClient (fifo_s *clientFifo) {
+  printf("WORKX: .. Waiting for a client\n");
+  if (FIFO_isUsable(clientFifo) == 0) {
+    return 0;
+  }
+  return -1;
+}
+
+
 // Подготовка пакета для отправки
 int WORK_preparePackage(workerHost_s *worker) {
   printf("WORKX: .. Preparing package\n");
-  worker->packet->control = 0b0100110011110000;
-  WORK_fillBuffer8b(worker->packet->info, HDLC_INFO_LENGTH);
-  worker->packet->fcs = CRC16_compute(worker->packet->info, HDLC_INFO_LENGTH);
-
+  
   // Перемещение структуры в массив на передачу
   size_t structSize = sizeof(hdlcPacket_s);
   uint8_t tmpPtr = 0;
@@ -33,30 +65,67 @@ int WORK_preparePackage(workerHost_s *worker) {
 // Отправка пакета
 int WORK_sendPackage(workerHost_s *worker)  {
   printf("WORKX: .. Sending package\n");
-  
+  if (FIFO_isUsable(worker->fifo) == 0) {
+    if (worker->fifo->count > 0) {
+      FIFO_put(worker->fifo, &worker->byteBuffer[worker->byteBufferHead]); 
+      if (worker->byteBufferHead < WORK_BYTE_BUFFER_SIZE) {
+        worker->byteBufferHead++;
+      } else {
+        worker->byteBufferHead = 0;
+        return -2;
+      }      
+    } else {
+      // fifo опустошился
+      return 1;
+    }
+    return 0;
+  }
   return 0;
 }
 
 
 // Ожидание пакета
-int WORK_waitPackage(workerHost_s *worker) {
+inline int WORK_waitPackage(workerHost_s *worker) {
   printf("WORKX: .. Waiting for a package\n");
   if (FIFO_isUsable(worker->fifo) == 0) {
+    if (worker->fifo->count > 0) {
+      FIFO_get(worker->fifo, &worker->byteBuffer[worker->byteBufferHead]); 
+      if (worker->byteBufferHead < WORK_BYTE_BUFFER_SIZE) {
+        worker->byteBufferHead++;
+      } else {
+        worker->byteBufferHead = 0;
+        return -2;
+      }      
+    } else {
+      return 1;
+    }
     return 0;
   }
   return -1;
 }
 
 
-int WORK_receivePackage(workerHost_s *worker) {
+inline int WORK_receivePackage(workerHost_s *worker) {
   printf("WORKX: .. Receiving package\n");
   // Receiving in buffer
   
-  if (DO_UNIT_TESTS){WORK_testFill(worker->byteBuffer, WORK_BYTE_BUFFER_SIZE); return 0;} 
-  
-  uint8_t buf;
-  if (FIFO_get(worker->fifo, &buf) == 0) {
-    // return 0;
+  static int fifoEmptyCounter = 0;
+  static int bufPtr = 0;
+  uint8_t buf = 0;
+  int res = FIFO_get(worker->fifo, &buf);
+  // Байт из fifo забран
+  if (res == 0) {
+    fifoEmptyCounter = 0;
+    bufPtr++;
+  }
+  // fifo опустошён
+  if (res == 1) {
+    fifoEmptyCounter++;
+  }
+  if (fifoEmptyCounter > 3) {
+    fifoEmptyCounter = 0;
+    bufPtr = 0;
+    return 0;
   }
   
   return -1;
@@ -140,14 +209,24 @@ int WORK_parsePackage(workerHost_s *worker) {
   }
   printf("\n");
 
-  return 0;
+  // Проверка контрольной суммы разобранного пакета
+  uint16_t crc = worker->packet->fcs;
+  worker->packet->fcs = 0;
+  if (CRC16_compute((uint8_t*) worker->packet, sizeof(workerHost_s)) == crc) {
+    printf("WORKX: .. CRC OK");
+  } else {
+    printf("WORKX: .. WRONG CRC");
+    return -1;
+  }
+
+  return -1;
 }
 
 
 int WORK_checkPackage(workerHost_s *worker) {
   printf("WORKX: .. Checking package\n");
   int res = 0;
-
+  return 0;
   res = HDLC_isControlFieldValid(worker->packet->control);
   // Проверка поля управления
   if (res != 0) {
diff --git a/src/worker/worker.h b/src/worker/worker.h
index 48beb7f..1d7fcaf 100644
--- a/src/worker/worker.h
+++ b/src/worker/worker.h
@@ -17,13 +17,18 @@ typedef struct {
   hdlcPacket_s *packet;
   fifo_s *fifo;
   uint8_t *byteBuffer;
+  uint8_t byteBufferHead;
   bool isInitialized;
 } workerHost_s;
 
 #define WORK_BYTE_BUFFER_SIZE 128
 
+workerHost_s* WORK_workerInit (workerHost_s* worker,
+  hdlcPacket_s* packet, fifo_s* fifo, uint8_t* buffer);
+
 int WORK_execute(int (*callback)(workerHost_s*), workerHost_s *worker);
 
+int WORK_waitClient (fifo_s *clientFifo);
 int WORK_preparePackage(workerHost_s *worker);
 int WORK_sendPackage(workerHost_s *worker);
 int WORK_waitPackage(workerHost_s *worker);
diff --git a/src/worker/worker_master.c b/src/worker/worker_master.c
index 4ed7cd4..ad7c20c 100644
--- a/src/worker/worker_master.c
+++ b/src/worker/worker_master.c
@@ -4,108 +4,105 @@
 
 #include <string.h>
 
-static hdlcPacket_s hdlcMasterPacket = {hdlcMasterAddress};
-static fifo_s hdlcMasterFifo;
+static hdlcPacket_s hdlcMasterPacket = {0};
+fifo_s hdlcMasterFifo;
 static workerHost_s hdlcMaster = {0};
 static uint8_t masterBuffer[WORK_BYTE_BUFFER_SIZE];
-
-workerHost_s* WORK_masterInit () {
-  if (!hdlcMaster.isInitialized) {
-    printf("WMAST: Starting master worker initialization\n");
-    hdlcMaster.packet = &hdlcMasterPacket;
-    hdlcMaster.fifo = &hdlcMasterFifo;
-    hdlcMaster.isInitialized = true;
-    hdlcMaster.byteBuffer = masterBuffer;
-    FIFO_init(&hdlcMasterFifo);
-
-    if (DO_UNIT_TESTS){WORK_testFifo(hdlcMaster.fifo);} 
-
-    printf("WMAST: Master initialization done\n");
-    WORK_printBlocks(&hdlcMaster, 3);
-    
-    return &hdlcMaster;
-  }
-  // Ошибка в пакете, повторная инициализация
-  hdlcMaster.isInitialized = false;
-  return NULL;
-}
+extern fifo_s hdlcSlaveFifo;
 
 
 int WORK_master (void) {
-  static workerHostState_e masterState = WORKSTATE_first;
-  if (masterState >= WORKSTATE_last) {
-      masterState = WORKSTATE_first;
+  static workerMasterHostState_e masterState = WSMASTER_first;
+  if (masterState >= WSMASTER_last) {
+      masterState = WSMASTER_first;
   }
 
   printf("WMAST: In master worker\n");
 
   int res = 0;
-
   switch (masterState) {
-    case WORKSTATE_first:
-      masterState = WORKSTATE_initializing;
+    case WSMASTER_first:
+      printf("WSLAV: Starting master worker\n");
+      masterState = WSMASTER_initializing;
     break;
     
     // Инициализация хоста
-    case WORKSTATE_initializing:
-      if (WORK_masterInit() != NULL) {
-        masterState = WORKSTATE_preparingPackage;
-      }
+    case WSMASTER_initializing:
+      if (WORK_workerInit(&hdlcMaster, 
+          &hdlcMasterPacket, &hdlcMasterFifo, masterBuffer) != NULL) {
+        masterState = WSMASTER_waitClient;
+      } 
+    break;
+    
+    // Ожидание инициализации клиента
+    case WSMASTER_waitClient:
+      res = WORK_waitClient(&hdlcSlaveFifo);   
+      if (res == 0) {
+        masterState = WSMASTER_preparingPackage;
+      } 
     break;
 
     // Подготовка пакета
-    case WORKSTATE_preparingPackage:
+    case WSMASTER_preparingPackage:
+      hdlcMaster.packet->address = hdlcMasterAddress;
+      hdlcMaster.packet->control = 0b0100110011110000;
+      WORK_fillBuffer8b(hdlcMaster.packet->info, HDLC_INFO_LENGTH);
+      hdlcMaster.packet->fcs = 0;
+      uint16_t crc = CRC16_compute((uint8_t*) hdlcMaster.packet, sizeof(workerHost_s));
+      hdlcMaster.packet->fcs = crc;
       res = WORK_execute(WORK_preparePackage, &hdlcMaster);   
       if (res == 0) {
-        masterState = WORKSTATE_sendingPackage;
+        masterState = WSMASTER_sendingPackage;
       }    
     break;
 
     // Отправка пакета
-    case WORKSTATE_sendingPackage:
+    case WSMASTER_sendingPackage:
       res = WORK_execute(WORK_sendPackage, &hdlcMaster);   
       if (res == 0) {
-        masterState = WORKSTATE_waitingPackage;
+        masterState = WSMASTER_waitingPackage;
       }      
     break;
 
     // Ожидание ответа
-    case WORKSTATE_waitingPackage:  
+    case WSMASTER_waitingPackage:  
       res = WORK_execute(WORK_waitPackage, &hdlcMaster);   
       if (res == 0) {
-        masterState = WORKSTATE_receivingPackage;
+        masterState = WSMASTER_receivingPackage;  
       }
     break;
 
     // Получение пакета
-    case WORKSTATE_receivingPackage: 
+    case WSMASTER_receivingPackage: 
       res = WORK_execute(WORK_receivePackage, &hdlcMaster);   
       if (res == 0) {
-        masterState = WORKSTATE_parsingPackage;
+        masterState = WSMASTER_parsingPackage;
       }  
     break;
 
     // Парсинг пакета
-    case WORKSTATE_parsingPackage: 
+    case WSMASTER_parsingPackage: 
       res = WORK_execute(WORK_parsePackage, &hdlcMaster);   
       if (res == 0) {
-        masterState = WORKSTATE_checkingPackage;
+        masterState = WSMASTER_checkingPackage;
       }
     break;
 
     // Проверка пакета
-    case WORKSTATE_checkingPackage:
+    case WSMASTER_checkingPackage:
     res = WORK_execute(WORK_checkPackage, &hdlcMaster);   
     if (res == 0) {
-      masterState = WORKSTATE_last;
+      masterState = WSMASTER_last;
+      __attribute__((fallthrough));
+    } else {
+      break;
     }
-    break;
+    
 
     // Цикл завершён, повторяем
-    case WORKSTATE_last:
+    case WSMASTER_last:
       printf("WMAST: Job done. Starting from the beginning\n");
-      masterState = WORKSTATE_first;
-      // Либо переходить сразу на подготовку пакета
+      masterState = WSMASTER_preparingPackage;
     break;
   }  
 
diff --git a/src/worker/worker_slave.c b/src/worker/worker_slave.c
index 82d10b8..21e14a0 100644
--- a/src/worker/worker_slave.c
+++ b/src/worker/worker_slave.c
@@ -1,27 +1,83 @@
 #include "main.h"
 #include "worker.h"
+#include "worker_type.h"
 
-static hdlcPacket_s hdlcSlavePacket = {hdlcSlaveAddress};
-static fifo_s hdlcSlaveFifo;
+static hdlcPacket_s hdlcSlavePacket = {0};
+fifo_s hdlcSlaveFifo;
 static workerHost_s hdlcSlave = {0};
-
-workerHost_s* WORK_slaveInit () {
-  if (!hdlcSlave.isInitialized) {
-    printf("WSLAV: Starting slave worker initialization\n");
-    hdlcSlave.packet = &hdlcSlavePacket;
-    hdlcSlave.fifo = &hdlcSlaveFifo;
-    hdlcSlave.isInitialized = true;
-    printf("WSLAV: Slave initialization done\n");
-    WORK_printBlocks(&hdlcSlave, 3);
-  }
-  
-  return &hdlcSlave;
-}
+static uint8_t slaveBuffer[WORK_BYTE_BUFFER_SIZE]; 
+extern fifo_s hdlcMasterFifo;
 
 
 int WORK_slave(void) {
-  WORK_slaveInit();
+  static workerSlaveHostState_e slaveState = WSSLAVE_first;
+  if (slaveState >= WSSLAVE_last) {
+      slaveState = WSSLAVE_first;
+  }
+
   printf("WSLAV: In slave worker\n");
 
+  int res = 0;
+
+  switch (slaveState) {
+    case WSSLAVE_first:
+      printf("WSLAV: Starting slave worker\n");
+    break;
+
+    case WSSLAVE_initializing:
+      if (WORK_workerInit(&hdlcSlave, 
+          &hdlcSlavePacket, &hdlcSlaveFifo, slaveBuffer) != NULL) {
+        res = 0;
+      } 
+    break;
+    
+    case WSSLAVE_waitClient:
+      res = WORK_waitClient(&hdlcMasterFifo);   
+    break;
+  
+    case WSSLAVE_waitingPackage:
+      res = WORK_execute(WORK_waitPackage, &hdlcSlave);   
+    break;
+  
+    case WSSLAVE_receivingPackage:
+      res = WORK_execute(WORK_receivePackage, &hdlcSlave);   
+    break;
+  
+    case WSSLAVE_checkingPackage:
+      res = WORK_execute(WORK_checkPackage, &hdlcSlave);   
+    break;
+  
+    case WSSLAVE_parsingPackage:
+      res = WORK_execute(WORK_parsePackage, &hdlcSlave);  
+    break;
+
+    case WSSLAVE_preparingPackage:
+      hdlcSlave.packet->address = hdlcSlaveAddress;
+      uint8_t tmp = hdlcSlave.packet->info[0];
+      hdlcSlave.packet->info[0] = hdlcSlave.packet->info[1];
+      hdlcSlave.packet->info[1] = tmp;
+      res = WORK_execute(WORK_preparePackage, &hdlcSlave);   
+    break;
+  
+    case WSSLAVE_sendingPackage:
+      res = WORK_execute(WORK_sendPackage, &hdlcSlave);   
+      if (res == 0) {
+        slaveState = WSSLAVE_last;
+        __attribute__((fallthrough));
+      } else {
+        break;
+      }
+  
+    case WSSLAVE_last:
+      printf("WSLAV: Job done. Starting from the beginning\n");
+      slaveState = WSSLAVE_waitClient;
+    break;
+
+  } // switch (slaveState)
+
+  if (res == 0) {
+    slaveState++;
+  }
+
   return 0;
 }
\ No newline at end of file
diff --git a/src/worker/worker_type.h b/src/worker/worker_type.h
index 97ef96f..cf2f964 100644
--- a/src/worker/worker_type.h
+++ b/src/worker/worker_type.h
@@ -13,16 +13,30 @@
 
 // Перечисление статусов конкретного хоста
 typedef enum {
-  WORKSTATE_first = 0,
-  WORKSTATE_initializing,
-  WORKSTATE_preparingPackage,
-  WORKSTATE_sendingPackage,
-  WORKSTATE_waitingPackage,
-  WORKSTATE_receivingPackage,
-  WORKSTATE_checkingPackage,
-  WORKSTATE_parsingPackage,
-  WORKSTATE_last
-} workerHostState_e;
+  WSMASTER_first = 0,
+  WSMASTER_initializing,
+  WSMASTER_waitClient,
+  WSMASTER_preparingPackage,
+  WSMASTER_sendingPackage,
+  WSMASTER_waitingPackage,
+  WSMASTER_receivingPackage,
+  WSMASTER_checkingPackage,
+  WSMASTER_parsingPackage,
+  WSMASTER_last
+} workerMasterHostState_e;
+
+typedef enum {
+  WSSLAVE_first = 0,
+  WSSLAVE_initializing,
+  WSSLAVE_waitClient,
+  WSSLAVE_waitingPackage,
+  WSSLAVE_receivingPackage,
+  WSSLAVE_checkingPackage,
+  WSSLAVE_parsingPackage,
+  WSSLAVE_preparingPackage,
+  WSSLAVE_sendingPackage,
+  WSSLAVE_last
+} workerSlaveHostState_e;
 
 
 #endif // WORKER_TYPE_H
\ No newline at end of file