Advanced Settings V1 - Siemens SIMATIC S7-1200 Function Manual

4.3.1.3

Advanced settings V1

Process value monitoring V1
Configure a warning high and low limit for the process value in the "Process value
monitoring" configuration window. If one of the warning limits is exceeded or undershot
during operation, a warning will be displayed at the PID_Compact instruction:
● At the InputWarning_H output parameter if the warning high limit has been exceeded
● At the InputWarning_L output parameter if the warning low limit has been undershot
The warning limits must be within the process value high and low limits.
The process value high and low limits will be used if you do not enter values.
Example
Process value high limit = 98° C; warning high limit = 90° C
Warning low limit = 10° C; process value low limit = 0° C
PID_Compact will respond as follows:
Process value
> 98° C
≤ 98° C and > 90° C
≤ 90° C and ≥ 10° C
< 10° C and ≥ 0° C
< 0° C
See also
Process value settings V1 (Page 100)
PWM limits V1 (Page 102)
Output value limits V1 (Page 104)
PID parameters V1 (Page 104)
PID control
Function Manual, 03/2017, A5E35300227-AC
InputWarning_H
TRUE
TRUE
FALSE
FALSE
FALSE
InputWarning_L
FALSE
FALSE
FALSE
TRUE
TRUE
Using PID_Compact
4.3 PID_Compact V1
Operating mode
Inactive
Automatic mode
Automatic mode
Automatic mode
Inactive
101