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What This Chapter Contains
Troubleshoot
103
Maintain Your Modules
This chapter includes information about troubleshooting and
maintenance.
I/O errors can be read from safety input status, test output status, and
safety output status indicators.
• Status data when I/O is normal (OK): ON (1)
• Status data when a fault (Alarm) occurs I/O: OFF (0)
The details of errors can be read by using explicit messages.
See the tables that show safety input errors, test output errors, and
safety output errors.
For I/O error latch-time settings, the OFF status is maintained
IMPORTANT
for at least the error latch time (0...65,530 ms, in increments of
10 ms) when individual safety-input status turns OFF.
Chapter
Publication 1791DS-UM001H-EN-P - April 2009
8
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