Block alarm detection is based on the PV and SP values. You can configure the following alarm limits to compare to the PV value for alarm detection:
You can configure the following alarm limits to compare to the difference between the SP and PV values (process error) for deviation alarm detection:
Deviation alarms are suppressed on SP changes. When the PV comes within the deviation limits or if the status of OUT or BKCAL_IN becomes limited, the deviation alarm is enabled again.
This block supports conditional alarming. Enabling conditional alarming makes additional parameters available for this block. On standard PID blocks, enable and disable conditional alarming from the Block Alarms dialog (right-click the block and select Assign Alarm). For PID blocks converted to fieldbus (FFPID and FFPID_RMT) enable conditional alarming from the Block Alarms dialog or by using the CONDALM_ENABLED parameter.