Mailbox Messaging
MVI69-PDPMV1
♦
CompactLogix or MicroLogix Platform
User Manual
PROFIBUS DPV1 Master
Page 108 of 225
ProSoft Technology, Inc.
July 8, 2011
4.4.10 Mailbox Message: Class 1 Acyclic Data Write
This command initiates a DPV1 Class 1 acyclic write request. Refer to EN50170
(DPV1) for more information.
Parameter Description
Command Initiator
Application
Command Name
MSAC1 WRITE
Command Number
2100h
Fragmented No
Extended Header Data
Fault information may be returned in the header of the response.
Command and Response Layout: Acyclic Write
Command
Response
Message ID
(ID)
(ID)
Acyclic Message Status
Word
4002h
0002h
Command
0021h
0021h Acyclic
Write
Data size
(Size of data)
(Size of data)
Number of data bytes (n)
Frame count
0001h
0001h
Frame number
0001h
0001h
Offset high
0000h
0000h
Offset low
0000h
0000h
Extended word 1 Slave Addr. Slot Number
Slave Addr. Slot Number
Extended word 2
Index
Length Index
Length
Extended word 3
-
-
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
Data 1
Data 1
Message Data byte 2
Data 2
Data 2
Message Data byte 3
Data 3
Data 3
... ...
...
Message Data byte n
Data n
Data n
