Advanced Settings V2 - Siemens SIMATIC S7-1200 Function Manual

5.2.1.4

Advanced settings V2

Actual value monitoring V2
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_3Step 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_3Step 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
In the actuator settings, you can configure the response of PID_3Step when the process
value high limit or low limit is violated.
PID control
Function Manual, 03/2017, A5E35300227-AC
InputWarn- InputWarn-
ing_H ing_L
TRUE FALSE
TRUE FALSE
FALSE FALSE
FALSE TRUE
FALSE TRUE
Error- Operating mode
Bits
0001h As configured
0000h Automatic mode
0000h Automatic mode
0000h Automatic mode
0001h As configured
Using PID_3Step
5.2 PID_3Step V2
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