Python examples

KMtronic Modbus LAN TCP/IP to Modbus RS485 RTU Serial Converter: testing MODBUS LED Display

Posted on August 23, 2018 (August 23, 2018) by KMtronic

Python examples KMtronic Modbus LAN TCP/IP to Modbus RS485 RTU Serial Converter: testing MODBUS LED Display Pymodbus is a full Modbus protocol implementation using twisted for its asynchronous communications core. import struct from struct import * from pymodbus.client.sync import ModbusTcpClient # from pymodbus.client.sync import ModbusSerialClient as ModbusClient import logging logging.basicConfig() log . . .

Python read SDM230 Modbus Single Phase Energy Meter with Pymodbus

Posted on November 17, 2017 (May 18, 2018) by KMtronic

import struct import binascii import time from pymodbus.constants import Endian from pymodbus.payload import BinaryPayloadDecoder from pymodbus.payload import BinaryPayloadBuilder from struct import * from pymodbus.client.sync import ModbusTcpClient import logging logging.basicConfig() log = logging.getLogger() #log.setLevel(logging.DEBUG) host = ‘192.168.1.204’ port = 502 client = ModbusTcpClient(host, port) client.connect() for x in range(0, 300): rr = client.read_input_registers(0x0000,2,unit=1) assert(rr.function_code . . .

How to send bytes to serial port in Python | Control KMtronic USB Relay board example

Posted on November 7, 2017 (February 23, 2018) by KMtronic

FIRST channel commands: OFF command : FF 01 00 (HEX) or 255 1 0 (DEC) ON command : FF 01 01 (HEX) or 255 1 1 (DEC) (1) Verify Python Interpreter Availability with ‘helloworld.py’ #!/usr/bin/python # Hello world python program print “Hello World!”; (2) Create ‘kmtronic_usb_relay_test.py” file (3) Copy and paste code: #!/usr/bin/python . . .

How to Send a GET Packet in Python | Control KMtronic WEB Relay board example

Posted on November 6, 2017 (February 23, 2018) by KMtronic

(1) Verify Python Interpreter Availability with ‘helloworld.py’ #!/usr/bin/python # Hello world python program print “Hello World!”; (2) Create ‘kmtronic_web_relay_test.py” file (3) Copy and paste code: #!/usr/bin/python # Test KMtronic WEB Relay board print “Test KMtronic WEB Relay board”; import socket import time print “” HOST = “192.168.1.199” PORT = 80 # Arbitrary non-privileged . . .

How to Send a UDP Packet in Python | Control KMtronic UDP Relay board

Posted on November 3, 2017 (February 23, 2018) by KMtronic

(1) Verify Python Interpreter Availability with ‘helloworld.py’ #!/usr/bin/python # Hello world python program print “Hello World!”; (2) Create ‘kmtronic_up_relay_test.py” file (3) Copy and paste code: #!/usr/bin/python # Test KMtronic UDP Relay board print “Test KMtronic UDP Relay board”; import socket import time UDP_IP = “192.168.1.199” UDP_PORT = 12345 RELAY1_ON_COMMAND = “FF0101” RELAY1_OFF_COMMAND = “FF0100” . . .