Rockwell Automation Publication 1756-RM012B-EN-P - April 2018 79
Appendix C
Reaction Times
Connection Reaction Time
Limit
The Connection Reaction Time Limit is the maximum age of safety packets
on the associated connection. If the age of the data that is used by the
consuming device exceeds the Connection Reaction Time Limit, a connection
fault occurs. The following equations determine the Connection Reaction
Time Limit:
Input Connection Reaction Time Limit =
Input RPI x [Timeout Multiplier + Network Delay Multiplier]
Output Connection Reaction Time Limit =
Safety Task Period x [Timeout Multiplier + Network Delay Multiplier - 1]
The Connection Reaction Time Limit is shown on the Safety tab of the
Module Properties dialog box.
Figure 21 - Connection Reaction Time Limit
Topic Page
Connection Reaction Time Limit 79
System Reaction Time 81
Logix System Reaction Time 81
Factors That Affect Logix Reaction-time Components 83
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