TO BE REMOVED.

examples/diag_test.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env python3
+"""Pymodbus synchronous client example.
+
+An example of a single threaded synchronous client.
+
+usage: simple_sync_client.py
+
+All options must be adapted in the code
+The corresponding server must be started before e.g. as:
+    python3 server_sync.py
+"""
+
+# --------------------------------------------------------------------------- #
+# import the various client implementations
+# --------------------------------------------------------------------------- #
+import pymodbus.client as ModbusClient
+from pymodbus import (
+    ExceptionResponse,
+    FramerType,
+    ModbusException,
+    pymodbus_apply_logging_config,
+)
+
+
+def run_sync_simple_client():
+    """Run sync client."""
+    # activate debugging
+    pymodbus_apply_logging_config("DEBUG")
+
+    print("get client")
+    client = ModbusClient.ModbusSerialClient(
+        "socket://127.0.0.1:5020",
+        framer=FramerType.RTU,
+        # timeout=10,
+        # retries=3,
+        baudrate=9600,
+        bytesize=8,
+        parity="N",
+        stopbits=1,
+        # handle_local_echo=False,
+    )
+
+    print("connect to server")
+    client.connect()
+
+    print("get and verify data")
+    try:
+        rr = client.read_device_information(slave=1, read_code=1, object_id=0)
+    except ModbusException as exc:
+        print(f"Received ModbusException({exc}) from library")
+        client.close()
+        return
+    if rr.isError():
+        print(f"Received Modbus library error({rr})")
+        client.close()
+        return
+    if isinstance(rr, ExceptionResponse):
+        print(f"Received Modbus library exception ({rr})")
+        # THIS IS NOT A PYTHON EXCEPTION, but a valid modbus message
+        client.close()
+
+    print("close connection")
+    client.close()
+
+
+if __name__ == "__main__":
+    run_sync_simple_client()