ProSoft Technology MVI69-PDPMV1 - Manual (Page 118)

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