Updated by User

Custom/ModbusTester.py

+from pymodbus.client.sync import ModbusTcpClient, ModbusSerialClient, ModbusRtuFramer
+import time
+import traceback
+import serial
+
+client = ModbusSerialClient(method='rtu',
+                                 port="/dev/ttyUSB0",
+                                 baudrate=int(2400),
+                                 timeout=int(10),
+                                 parity=serial.PARITY_EVEN
+                                 )
+
+unit_list = [166,44,163,147,70,109,194,136]
+
+if client.connect():
+    while True:
+        for each_device in unit_list:
+            try:
+                print(each_device)
+                data = client.read_holding_registers(0, 15, unit=each_device)
+                print(data.registers)
+            except Exception as e:
+                traceback.print_exc()
+            time.sleep(0)