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Publication SAFETY-AT017B-EN-P – July 2011
Worst case, the time it takes to occur is the sum of the A to E path as
described below.
A
B
C
D
A – Input Module Delay – 16 ms + on/off delay filters
E
B – Input Connection Reaction Time Limit (CTRL)
The Connection Reaction Time Limit is configured in the 1791ES
Module Properties within RSLogix 5000 software. The Input
Connection defaults to 4 x RPI.
C – GuardLogix Delay
The maximum delay for the GuardLogix controller is:
Task Watchdog
D – Output Connection Reaction Time Limit
E – Output Module Delay = 6ms
Worst Case Reaction Time = A + B + C + D + E
