Using PID_Compact
4.2 PID_Compact V2
PID control
78 Function Manual, 03/2017, A5E35300227-AC
Advanced settings V2
Process 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_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.
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:
> 98 °C TRUE FALSE 0001h Inactive or
Substitute output value with error
< 0 °C FALSE TRUE 0001h Inactive or
Substitute output value with error
In the output value settings, you can specify the reaction of PID_Compact when the process
value high limit or low limit is violated.
Parameters State and Mode V2 (Page 265)
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