Mailbox Messaging MVI56-PDPMV1 ♦ ControlLogix Platform
User Manual PROFIBUS DPV1 Master
Page 140 of 251 ProSoft Technology, Inc.
3.2.4 Reading Alarms
The module will automatically read alarms received from DPV1 slaves into
specific controller tags.
When the ladder recognizes that the module has received a new alarm, the
module will latch the MVI56PDPMV1.Util.CurrentAlarm.15 bit. The sample ladder
logic will automatically recognize that the module has an alarm pending and
execute a message instruction to poll for the alarm.
When the message is successfully executed the ladder logic will increment the
following controller tag:
MVI56PDPMV1.Util.MSG.GetAlarm.DNCounter.ACC
If the message is not successfully executed the ladder logic will increment the
following controller tag:
MVI56PDPMV1.Util.MSG.GetAlarm.ERCounter.ACC
The error code will be copied to the following controller tag:
MVI56PDPMV1.Util.MSG.GetAlarm.LastError
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