I have small problem i´m not able figure out wiring logic betwen pid regulator with Analog input output and AO , AI cards , main problem i think is AO card wiring to festo as giving it setpoint,i didn´t really used AO recently , but in card manual it´s also quite strange for me.
I guess they are not properly drawn on project , because they are not working as they have been drawn , setpoint and feedback is not really working , so i guess i will have to rewire them , but here im little bit lost here how to wire it properly as pid controler has it own supply +24V , also don´t know why is negative used as auxiliary negative wire to 2x AI card signal wire ,if it should be wired like it . As i have read 2x AI card is only measuring card if im i right .
Could you like to help please ?
Signal : 0-10V
The cards used in project:
Regulator - Festo - VPPM-6L-L-1-G18-0L6H-V1N-S1C1
Here is link for drawing scheme of this problematic wiring and festo pid