read coils 5

Dockerfile

@@ -11,7 +11,7 @@ ARG CONF_DIR="${APP_DIR}/config"
 RUN \
     apt update && \
     pip3 install loguru && \
-    pip3 install pymodbus && \
+    pip3 install pymodbus==3.6.3 && \
     pip3 install paho-mqtt
 
 RUN \

src/ModbusHandler.py

@@ -39,17 +39,17 @@ class ModbusHandler(threading.Thread):
 
             self.processImage.init(digitalOutputBits, digitalInputBits, analogInputBits)
 
-            reg = client.read_coils(0, digitalOutputBits)
-            if isinstance(reg, ModbusIOException):
-                raise Exception(reg)
-            with self.processImage:
-                self.processImage.setCoils(reg.bits)
 
             while not self.killBill:
                 try:
                     if not client.is_socket_open():
                         client.connect()
 
+                    reg = client.read_coils(0, digitalOutputBits)
+                    if isinstance(reg, ModbusIOException):
+                        raise Exception(reg)
+                    readCoils = reg.bits
+
                     reg = client.read_input_registers(0, analogInputBits // 8)
                     if isinstance(reg, ModbusIOException):
                         raise Exception(reg)
@@ -64,6 +64,7 @@ class ModbusHandler(threading.Thread):
                     with self.processImage:
                         self.processImage.setAnalogsInputs(analogInputs)
                         self.processImage.setDiscreteInputs(discreteInputs)
+                        self.processImage.setCoils(readCoils)
                         if self.processImage.hasPendingInputChanges():
                             self.processImage.notify()
                         if self.processImage.hasPendingOutputChanges():