Rockwell Automation 1395 ControlNet Communication Board - Manual (Page 37)

3–23 Configuration & PLC Interfacing
Publication 1395–5.37– March, 1999
Write Parameter Data This function writes a parameter value to the Drive.
PLC Block Transfer Instruction Data –
Write Read
Size In Elements: 6 6
Processor Type: PLC–5 PLC–5
Destination Address: N40:0–5 N40:0–5
Message Structure –
0
PLC Message Write PLC Message Read
NOTE: Word 4 of the PLC Message Read instruction is broken down
into two bytes. The High byte contains the status bits
The Low byte contains the Drive message length in bytes.
Header
Word 1
0
Function Code
515
Message Length
See Examples
Header
Word 2
Header
Word 3
Header
Word 4
Data
Word 5
Parameter #
0
Header
Word 1
0
Function Code
515
See Note
Header
Word 2
Header
Word 3
Header
Word 4
Parameter
Status
Data
Word 5
Parameter #
Data
Word 6 Parameter
Data Data
Word 6
Message Operation – The WRITE PARAMETER DATA function
requests the Drive to change the value of a parameter specified in the
message to the value contained in the message. The value must be sent
to the Drive in Drive units and may need to be scaled by the PLC
Controller prior to being sent.