Siemens SIMATIC S7-1200 - Page 438

Instructions
9.3 PID_Temp
PID control
438 Function Manual, 03/2017, A5E35300227-AC
The following table shows how Mode and State change during pretuning with errors.
Cycle no.
Mode
State
Action
0
4
4
Set Mode = 1
1 1 4 Set ModeActivate = TRUE
1 4 1 Value of State is saved in Mode parameter
Pretuning is started
n 4 1 Pretuning canceled
n
4
4
Manual mode is started
If ActivateRecoverMode = TRUE, the operating mode that is saved in the Mode parameter is
activated. When you start pretuning or fine tuning, PID_Temp has saved the value of State in
the Mode in-out parameter. This means PID_Temp switches to the mode from which tuning
was started.
If ActivateRecoverMode = FALSE, the system switches to "Inactive" operating mode.
See also
Output parameters of PID_Temp (Page 391)
In/out parameters of PID_Temp V2 (Page 393)