User manual

67Publication 1756-RM093F-EN-P - January 2010 67
Chapter 7
Monitor Status and Handle Faults
Introduction
The GuardLogix architecture provides you with many ways of
detecting and reacting to faults in the system. The first way that you
can handle faults is to make sure you have completed the checklists
for your application (see Appendix
D).
Monitoring System Status
To monitor system status, you can view the status of safety tag
connections. You can also determine current operating status by
interrogating various device objects. It is your responsibility to
determine what data is most appropriate to initiate a shutdown
sequence.
CONNECTION_STATUS Data
The first member of the tag structure associated with safety input data
and produced/consumed safety tag data contains the status of the
connection. This member is a pre-defined data type called
CONNECTION_STATUS.
Topic Page
Monitoring System Status 67
GuardLogix System Faults 74