ProSoft Technology MVI56-PDPMV1 - Manual (Page 143)

MVI56-PDPMV1 ♦ ControlLogix Platform Mailbox Messaging
PROFIBUS DPV1 Master User Manual
ProSoft Technology, Inc. Page 143 of 255
March 22, 2011
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
The alarm data will be stored in the MVI56PDPMV1.Mailbox.Alarm controller tag
structure: