Mailbox Message: Alarm Indication - ProSoft Technology inRax MVI69-PDPMV1 User Manual

Mailbox Messaging
User Manual

4.4.16 Mailbox Message: Alarm Indication

This message indicates to the application that a DPV1 slave has transferred an
alarm message to the Master. This mailbox message is sent spontaneously by
the module; the module itself initiates the mailbox communications.
Detailed information about the cause of the alarm is presented in extended words
1 to 3 and in the message data field (see below).
Command and Response Layout: Alarm Indication
Message ID
Message information
Command
Data size
Frame count
Frame number
Offset high
Offset low
Extended word 1
Extended word 2 Seq Number
Extended word 3 Alarm Type
Extended word 4
Extended word 5
Extended word 6
Extended word 7
Extended word 8
Message Data byte 1
Message Data byte 2
Message Data byte 3
Message Data byte n
Slave Address
Station address of the slave that issued the alarm.
Slot Number
Used by the slave to indicate the source of the alarm. Range 0 to 254.
Seq Number
Unique identification number of the alarm. Range 0 to 31.
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Command
(ID)
4002h
0022h
(request length)
0001h
0001h
0000h
0000h
Slave Slot Number
Address
Alarm Spec
Ack
Ext Diag
-
-
-
-
Fault Information
Data 1
Data 2
Data 3
... ...
Data n
MVI69-PDPMV1 ♦ CompactLogix or MicroLogix Platform
Response
(ID)
0002h
0022h Alarm Indication
0000h
0001h
0001h
0000h
0000h
-
-
-
-
-
-
-
-
PROFIBUS DPV1 Master
ProSoft Technology, Inc.
July 8, 2011