Prosoft-technology MVI69-PDPMV1 Bedienungsanleitung PDF herunterladen (Seite 126)

Mailbox Messaging MVI69-PDPMV1 ♦ CompactLogix or MicroLogix Platform

User Manual PROFIBUS DPV1 Master

Page 126 of 225 ProSoft Technology, Inc.

July 8, 2011

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

Command Response

Message ID

(ID)

Message information 4002h

0002h

Command 0022h

0022h Alarm Indication

Data size (request length)

0000h

Frame count 0001h

0001h

Frame number 0001h

0001h

Offset high 0000h

0000h

Offset low 0000h

0000h

Extended word 1 Slave

Address

Slot Number -

Extended word 2 Seq Number Alarm Spec

Ack

Extended word 3 Alarm Type Ext Diag -

Extended word 4 -

Extended word 5 -

Extended word 6 -

Extended word 7 -

Extended word 8 Fault Information

Message Data byte 1 Data 1

Message Data byte 2 Data 2

Message Data byte 3 Data 3

… …

Message Data byte n Data 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.

1 2 ... 121 122 123 124 125 126 127 128 129 130 131 ... 224 225

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