Rockwell Automation 1756-L7x GuardLogix 5570 Controllers - Manual (Page 63)

Rockwell Automation Publication 1756-UM022A-EN-P - November 2012 63
Add, Configure, Monitor, and Replace CIP Safety I/O Chapter 5
View the Maximum Observed Network Delay
When the GuardLogix controller receives a safety packet, the software records
the maximum observed network delay. For safety inputs, the Maximum
Observed Network Delay displays the round-trip delay from the input module to
the controller and the acknowledge back to the input module. For safety outputs,
it displays the round-trip delay from the controller to the output module and the
acknowledge back to the controller. The Maximum Observed Network Delay is
shown on the Safety tab of the Module Properties dialog box. When online, you
can reset the Maximum Observed Network Delay by clicking Reset.
Figure 18 - Resetting the Max Observed Network Delay
Setting the Advanced Connection Reaction Time Limit Parameters
Configure connection parameters like the timeout multiplier and network delay
multiplier on the Advanced Connection Reaction Time Limit dialog box.
Figure 19 - Advanced Configuration
IMPORTANT The actual Maximum Network Delay time from the producer to the
consumer is less than the value displayed in the Maximum Network Delay
field on the Safety tab. In general, the actual maximum message delay is
approximately one-half the Maximum Network Delay value that is
displayed.