62 Rockwell Automation Publication 5000-UM005B-EN-P - November 2015
Chapter 4 Current/Voltage/Temperature-sensing Analog Input Module Features (5069-IY4)
Latch Alarms
Check Latch Process Alarms on the Alarms category to latch the process alarms.
To see where to latch Process Alarms on the 5069-IY4 module, see
page 97.
Unlatch Alarms
Once an alarm is latched, you must manually unlatch it. To unlatch an alarm,
change the output tag for that alarm.
For example, change the O.Chxx.LAlarmUnlatch tag for the low alarm that you
want to unlatch from 0 to 1.
For more information on how to use the module tags, see Appendix B,
Module Tag Definitions on page 133.
IMPORTANT
Before you unlatch an alarm, make sure the condition that triggered the alarm
no longer exists.
IMPORTANT
After an alarm is unlatched, change the tag back from 1 to 0.
You must change the tag from 0 to 1 to unlatch the alarm each time it is
triggered.
If you do not change the tag back to 0 and the alarm is latched again in the
future, the alarm remains latched despite the Unlatch tag value being 1.
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