Mailbox Messaging
MVI69-PDPMV1
♦
CompactLogix or MicroLogix Platform
User Manual
PROFIBUS DPV1 Master
Page 118 of 225
ProSoft Technology, Inc.
July 8, 2011
4.4.13 Mailbox Message: Class 2 Acyclic Data Write
This command issues a Class 2 DPV1 acyclic write request to a slave. Prior to
issuing this command, a connection to the slave must have been established,
see Initiate Class 2 Connection (page 110).
Parameter Description
Command Initiator
Application
Command Name
FB_APPL_MSAC2_WRITE
Command Number
0028h
Fragmented No
Command and Response Layout: Class 2 Acyclic Write
Command
Response
Message ID
(ID)
(ID)
Message information
4002h
0002h
Command
0028h
0028h
Class 2 Acyclic Write
Data size
(data size)
(data size)
Number of data bytes (
n
)
Frame count
0001h
0001h
Frame number
0001h
0001h
Offset high
0000h
0000h
Offset low
0000h
0000h
Extended word 1
C_REF C_REF
Extended word 2
Slot
Index Slot
Index
Extended word 3
Length
-
Length
-
Extended word 4
-
-
Extended word 5
-
Error
Decode
Extended word 6
-
Error Code 1 Error Code 2
Extended word 7
-
Extended Fault information
Extended word 8
-
Fault Information
Message Data byte 1
Write Data
Write Data
Response Data byte 1
Message Data byte 2
Response Data byte 2
Message Data byte 3
Response Data byte 3
---
...
Message Data byte (
n
)
Response Data byte
n
