I am using Exercise 1, and trying to Force Start Button input I.0.0 to be False all the time.
I tried also to force true. The current value shows on the force variable window, but it will not force the value.
Thanks for any help.
Hi! a digital input is an incoming signal for PLC side, this means the PLC reads the hardware channel to know what is the physical value. A input signal can not be forced, only PLC outputs values, variables, data stack.... (program elements)
Ah. Thanks.