ProSoft Technology 5204SE-MNET-PDPMV1 - Manual (Page 214)

5204SE-MNET-PDPMV1 ♦ ProLinx Gateway Reference
Modbus TCP/IP to PROFIBUS DP-V1 Pass-Through Master User Manual
Page 214 of 235
ProSoft Technology, Inc.
December 22, 2009
4.6.10 Read Class 1 Acyclic Data Message Structure
Parameter Description
Command Initiator Application
Command Name FB_APPL_MSAC1_READ
Command Number 0020h
Fragmented No
Extended Header Data Fault information may be returned in the header of the response.
Command and Response Layout: Acyclic Read
Command Response
Message ID (ID) (ID)
Acyclic Message Status
Word
4002h 0002h
Command 0020h 0020h Acyclic Class 1 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
Acyclic Message Status Word
Refer to Acyclic Message Status Word (page 218).
Slave Address
Station address of the slave responder.