ProSoft Technology 5204SE-MNET-PDPMV1 - Manual (Page 216)

5204SE-MNET-PDPMV1 ♦ ProLinx Gateway Reference
Modbus TCP/IP to PROFIBUS DP-V1 Pass-Through Master User Manual
Page 216 of 235
ProSoft Technology, Inc.
December 22, 2009
4.6.11 Write Class 1 Acyclic Data Message Structure
Parameter Description
Command Initiator Application
Command Name FB_APPL_MSAC1_WRITE
Command Number 0021h
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
Acyclic Message Status Word
Refer to Acyclic Message Status Word (page 218).
Slave Address
Station address of the slave responder.
Slot Number and Slot Index
Used in the slave to address the desired data block.