PyPLCn

Description

A simple REST library to use variables in PLCnext(c) AXC F 2152 PLC from Python.

Contributing

Contributions to this project are welcome.

Installing

Run pip install PyPLCn

Usage

Make to any global variable HMI tag, or set HMI flag to program tag.

Put variable to list - Plc.set_var_names(['LevelMinimum', 'LevelMaximum', 'Robot.Test_Var', 'LevelCurrent'])

Set variable value - Plc.set_var('LevelMinimum', '500') Don't forget! Variable value must be a string.

Get variable value - Plc.get_var('LevelMinimum')

You also can access variables with "HMI" flag in programs - Plc.get_var('Robot.Test_Var') Where Robot is program name.

If you use HMI authentication you must set login name and password in method Plc.connect('192.168.1.10', login='user', password='12345', poll_time=100). Else leave these fields blank or dont use them.

Example details

Exaple usage

Upload project to PLC from "examples" folder

Run code below

On HMI page you can see how values LevelMinimum and LevelMaximum change states, and in Python console you can see value LevelCurrent

from pyPLCn import pyPLCn
import time

if __name__ == '__main__':
    Plc = pyPLCn()
    Plc.set_var_names(['LevelMinimum', 'LevelMaximum', 'Robot.Test_Var', 'LevelCurrent'])
    Plc.connect('192.168.1.10', poll_time=100)
    while True:
        Plc.set_var('LevelMinimum', '500')
        Plc.set_var('LevelMaximum', '800')
        print('#####################################')
        print('LevelMinimum - {}'.format(Plc.get_var('LevelMinimum')))
        print('LevelMaximum - {}'.format(Plc.get_var('LevelMaximum')))
        print('Robot.Test_Var - {}'.format(Plc.get_var('Robot.Test_Var')))
        print('LevelCurrent - {}'.format(Plc.get_var('LevelCurrent')))
        print('#####################################')
        time.sleep(0.5)
        Plc.set_var('LevelMinimum', '300')
        Plc.set_var('LevelMaximum', '500')
        print('#####################################')
        print('LevelMinimum - {}'.format(Plc.get_var('LevelMinimum')))
        print('LevelMaximum - {}'.format(Plc.get_var('LevelMaximum')))
        print('Robot.Test_Var - {}'.format(Plc.get_var('Robot.Test_Var')))
        print('LevelCurrent - {}'.format(Plc.get_var('LevelCurrent')))
        print('#####################################')
        time.sleep(0.5)

Warning note!

Not for industrial usage! Use it on you own risk.