Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules - Manual (Page 348)

348 Publication 1756-UM009C-EN-P - December 2010
Appendix C Use Ladder Logic To Perform Run Time Services and Reconfiguration
Unlatch Alarms in the 1756-IF6I Module
Example rungs 0…4 show how to unlatch the following alarms in a 1756-IF6I
module, named Slot_1_IF6I.
• Channel 0 High high alarm - Rung 0
• Channel 0 High alarm - Rung 1
• Channel 0 Low alarm - Rung 2
• Channel 0 Low low alarm - Rung 3
• Channel 0 Rate alarm - Rung 4
IMPORTANT
An I/O module must be configured to latch alarms, see page 212
and page 223 , before you can perform unlatch services using
ladder logic. If an unlatch service is received by a module not
configured to latch alarms, the message instruction will error.
Also, all alarms for channel 0 can be unlatched simultaneously
with a single message instruction by leaving the object
attribute field blank.
Rung 0 unlatches the high high alarm.
Rung 1 unlatches the high alarm.
Rung 2 unlatches the low alarm.
Rung 3 unlatches the low low alarm.
Rung 4 unlatches the rate alarm.
Click on the box in
each rung to see
the configuration
and
communication
information
pop-up associated
with it. This
information is
explained on the
next page.