boseji · September 15, 2024 06:54 · Sep 15, 2024 · Sep 15, 2024 · Sep 15, 2024 · Sep 15, 2024
diff --git a/README.md b/README.md
@@ -0,0 +1,23 @@
+# Python MODBUS/IP Server and Client
+
+This example builds upon the umodbus library.
+
+PyPi <https://pypi.org/project/uModbus/>
+
+Sources <https://github.com/AdvancedClimateSystems/uModbus/>
+
+Documents <https://umodbus.readthedocs.io/en/latest/>
+
+## License
+
+`SPDX: MIT`
+
+MIT License
+
+Copyright (C) 2024 Abhijit Bose (aka. Boseji)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/.gitignore b/.gitignore
@@ -1 +0,0 @@
-*venv*

diff --git a/README.md → Python_MODBUS-IP_Server_and_Client.md b/README.md → Python_MODBUS-IP_Server_and_Client.md
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1 @@
+*venv*
diff --git a/clear-env.sh b/clear-env.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+# Copyright (C) 2024 Abhijit Bose (aka. Boseji) 
+# SPDX: MIT
+
+rm -rf venv
diff --git a/client.py b/client.py
@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+# Copyright (C) 2024 Abhijit Bose (aka. Boseji) 
+# SPDX: MIT
+
+import socket
+
+from umodbus import conf
+from umodbus.client import tcp
+
+# Enable values to be signed (default is False).
+conf.SIGNED_VALUES = True
+# Server Detail
+svr = ('localhost', 50222)
+# Create the Socket
+sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+print("\n Connecting to", svr)
+sock.connect(svr)
+
+# Returns a message or Application Data Unit (ADU) specific for doing
+# Modbus TCP/IP.
+message = tcp.write_single_register(
+    slave_id=1, 
+    address=1, 
+    value=23,
+    )
+# Return a Write Registers
+# message = tcp.write_multiple_registers(
+#     slave_id=1,
+#     starting_address=2,
+#     values=[14, 13, 67],
+# )
+
+# Response depends on Modbus function code. This particular returns the
+# amount of coils written, in this case it is.
+response = tcp.send_message(message, sock)
+
+sock.close()
diff --git a/requirements.txt b/requirements.txt
@@ -0,0 +1,2 @@
+pyserial==3.5
+uModbus==1.0.4
diff --git a/server.py b/server.py
@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+# Copyright (C) 2024 Abhijit Bose (aka. Boseji) 
+# SPDX: MIT
+import logging
+from socketserver import TCPServer
+from collections import defaultdict
+
+from umodbus import conf
+from umodbus.server.tcp import RequestHandler, get_server
+from umodbus.utils import log_to_stream
+
+# Add stream handler to logger 'uModbus'.
+log_to_stream(level=logging.DEBUG)
+# Server Detail
+svr = ('localhost', 50222)
+
+# A very simple data store which maps address against their values.
+data_store = defaultdict(int)
+
+# Enable values to be signed (default is False).
+conf.SIGNED_VALUES = True
+
+TCPServer.allow_reuse_address = True
+# Open Socket
+app = get_server(TCPServer, svr, RequestHandler)
+
+
+@app.route(slave_ids=[1], function_codes=[3, 4], addresses=list(range(0, 10)))
+def read_data_store(slave_id, function_code, address):
+    """" Return value of address. """
+    print("Fetch ADDR:", address)
+    return data_store[address]
+
+
+@app.route(slave_ids=[1], function_codes=[6, 16], addresses=list(range(0, 10)))
+def write_data_store(slave_id, function_code, address, value):
+    """" Set value for address. """
+    print("Store ADDR:", address, " Data:", value)
+    data_store[address] = value
+
+if __name__ == '__main__':
+    print("\n Starting Sever ", svr)
+    try:
+        app.serve_forever()
+    finally:
+        print("\n\n Closing down server...\n")
+        app.shutdown()
+        app.server_close()
diff --git a/setup-env.sh b/setup-env.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+# Copyright (C) 2024 Abhijit Bose (aka. Boseji) 
+# SPDX: MIT
+
+python3 -m venv venv
+source venv/bin/activate
+pip install -r requirements.txt
diff --git a/README.md b/README.md
@@ -0,0 +1,31 @@
+# Python MODBUS/IP Server and Client
+
+This example builds upon the `umodbus` library.
+
+PyPi <https://pypi.org/project/uModbus/>
+
+Sources <https://github.com/AdvancedClimateSystems/uModbus/>
+
+Documents <https://umodbus.readthedocs.io/en/latest/>
+
+## License
+
+MIT License
+
+Copyright (C) 2024 Abhijit Bose (aka. Boseji) 
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
+documentation files (the "Software"), to deal in the Software without restriction, including without 
+limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 
+of the Software, and to permit persons to whom the Software is furnished to do so, subject to the 
+following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial 
+portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT 
+NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH 
+THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
No results found