| Date | Version | Author |
|---|---|---|
| 2.12.2020 | 1.0.1 | Alexander Skachkov |
A simple REST library to use variables in PLCnext(c) AXC F 2152 PLC from Python.
Contributions to this project are welcome.
Run pip install PyPLCn
Make to any global variable hmi 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.
| Description | Value |
|---|---|
| Controller | AXC F 2152 |
| FW | 2020.0 LTS or later |
| PLCnext(c) Engineer(c) | 2020.0 LTS or later |
| Python | Version 3 or later |
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)
Not for industrial usage! Use it on you own risk.