WI-GTWY-9-xxx Wireless Gateway V1.18
113
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:
Command
Response
Message ID
(ID)
(ID)
Message Information
4002h
0002h
Command Number
0021h
0021h
Data Size
(Size of data)
(Size of data)
Extended Word 1
Slave Add
Slot No.
Slave Add
Slot No.
Extended Word 2
Index
Length
Index
Length
Extended Word 3
-
-
Extended Word 4
-
-
Extended Word 5
-
-
Error Decode
Extended Word 6
-
Err Code1
Err Code2
Extended Word 7
-
Return Code
Extended Word 8
-
Fault Information
Message data byte 1
Data 1
Data 1
:::
:::
:::
Message data byte n
Data n
Data 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.