The system I am working on has a SLC5/03 with a PV550 communicating via DH485. And I like to know what the function of 'Ack. Hold Time' and 'Snapshot Timeout' boxes under Alarms - Setup are? The reason I am asking is that I have the following problem: Sometimes an alarm is acknowledged on the PanelView but the SLC misses the acknowledgement. This only happens occasionally and it is hard to re-produce. What is happening?
Adrian
Adrian