User manual

30 Publication 1756-RM093F-EN-P - January 2010
Chapter 3 CIP Safety I/O for the GuardLogix Control System
Diagnostics
CIP Safety I/O modules perform self-diagnostics when the power is
turned ON and periodically during operation. If a diagnostic failure is
detected, safety input data (to the controller) and local safety outputs
are set to their safe state (OFF).
Status Data
In addition to safety input and output data, CIP Safety I/O modules
support status data to monitor module and I/O circuit health. Refer to
your module’s product documentation for specific product
capabilities.
Status Indicators
The CIP Safety I/O modules include status indicators. For details on
status indicator operation, refer to the product documentation for your
specific module.
On- or Off-delay Function
Some CIP Safety I/O modules may support On-delay and Off-delay
functions for input signals. Depending upon your application, you
may need to include Off-delay, On-delay, or both when calculating
system reaction time.
See Appendix
C for information on system reaction time.