Siemens SIMATIC S7-1200 Function Manual page 443

ActivateRecov- Description
erMode
TRUE Manual mode
If one or several errors occur and manual mode was active before the error occurred, PID_Temp re-
mains in manual mode.
If the following error occurs in manual mode, as long as this error is pending, PID_Temp sets the PID
output value to SubstituteOutput:
0010000h: Invalid value at ManualValue parameter. Value has an invalid number format.
•
If the error 0010000h is pending in manual mode and the following error occurs, PID_Temp sets the PID
output value to Config.Output.Heat.PidLowerLimit as long as this error is pending:
0020000h: Invalid value at SubstituteOutput tag. Value has an invalid number format.
•
This behavior is independent of SetSubstituteOutput.
Pretuning and fine tuning
ActivateRecov- Description
erMode
FALSE PID_Temp switches to "Inactive" mode in the event of an error. The controller is only activated by a
falling edge at Reset or a rising edge at ModeActivate.
TRUE If the following error occurs, PID_Temp remains in the active mode:
0000020h: Pretuning is not permitted during fine tuning.
•
The following errors are ignored:
0010000h: Invalid value at ManualValue parameter.
•
0020000h: Invalid value at SubstituteOutput tag.
•
When any other error occurs, PID_Temp cancels the tuning and switches to the mode from which tuning
was started.
PID control
Function Manual, 03/2017, A5E35300227-AC
Instructions
9.3 PID_Temp
443