Weidmuller WI-GTWY-9 User Manual page 113

WI-GTWY-9-xxx Wireless Gateway
DPV1 Acyclic Write
MSAC1_WRITE: Command Number = 0021h
This command initiates a DPV1 Class 1 acyclic write request. Consult EN50170 (DPV1) for
more information.
Command and response layout:
Message ID
Message Information
Command Number
Data Size
Extended Word 1
Extended Word 2
Extended Word 3
Extended Word 4
Extended Word 5
Extended Word 6
Extended Word 7
Extended Word 8
Message data byte 1
Message data byte n
• Slave Address
Station address of the slave responder
• Slot Number & Slot Index
Used in the slave to address the desired data block.
• Length
This parameter specifies the number of bytes that has to be written. If the destination data
block size is less than requested, the response will contain an error message. If the data block
length is greater than or equal to the requested length, the response contains the number of
bytes that has been written. The slave may answer with an error response if the data access is
not allowed.
Command
(ID)
4002h
0021h
(Size of data)
Slave Add Slot No.
Index Length
-
-
-
-
-
-
Data 1
:::
:::
Data n
Response
(ID)
0002h
0021h
(Size of data)
Slave Add Slot No.
Index Length
-
-
- Error Decode
Err Code1 Err Code2
Return Code
Fault Information
Data 1
:::
Data n
V1.18
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