From 23dd28740360a091adfe738901fdc8a856eda6c2 Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <wolfgang.hottgenroth@icloud.com>
Date: Thu, 17 Nov 2022 18:27:38 +0100
Subject: [PATCH] handle relais

---
 snippets/test1.py | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/snippets/test1.py b/snippets/test1.py
index 85da684..0070c70 100644
--- a/snippets/test1.py
+++ b/snippets/test1.py
@@ -22,7 +22,7 @@ class LocalException(Exception):
 def readInputRegister(client, addr):
   client.connect()
   try:
-    res = client.read_input_registers(addr, 2)
+    res = client.read_input_registers(addr, 2, slave=2)
     if (isinstance(res, ReadInputRegistersResponse)):
       v = BinaryPayloadDecoder.fromRegisters(res.registers, byteorder=Endian.Big, wordorder=Endian.Big).decode_32bit_float()
       return v
@@ -37,6 +37,16 @@ def readInputRegister(client, addr):
   finally:
     client.close()
 
+def writeCoil(client, addr, value):
+  client.connect()
+  try:
+    res = client.write_coil(addr, value, slave=1)
+    logger.debug(f"write coil result {res}")
+    return value
+  finally:
+    client.close()
+
+
 l = logging.getLogger()
 for h in l.handlers:
   l.removeHandler(h)
@@ -56,12 +66,22 @@ registers = [
 ]
 
 
+cnt = 0
+coilState = True
 while True:
   try:
     for reg in registers:
       v = readInputRegister(client, reg['addr'])
       logger.info(f"{reg['name']}: {v} {reg['unit']}")
 
+    cnt += 1
+    if ((cnt % 2) == 0):
+      coilState = not coilState
+      logger.info(f"Write {coilState} to coil")
+      writeCoil(client, 0, coilState)
+
+
+
     sleep(5)
   except Exception as e:
     logger.error(f"Caught exception: {str(e)}")