ProSoft Technology MVI56-PDPMV1 - Manual (Page 162)

Mailbox Messaging MVI56-PDPMV1 ♦ ControlLogix Platform
User Manual PROFIBUS DPV1 Master
Page 162 of 255 ProSoft Technology, Inc.
March 22, 2011
Command and Response Layout: Acyclic Read
Command Response
Message ID (ID) (ID)
Message information 4002h 0002h
Command 0020h 0020h Acyclic Read
Data size 0000h (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
Data 1 Response Data byte 1
Data 2 Response Data byte 1
Data 3 Response Data byte 1
... ...
Data n Response Data byte 1
Message Information
Refer to Message Information (page 173).
Slave Address
Station address of the slave responder.
Slot Number and Slot Index
Used in the slave to address the desired data block.