Rockwell Automation 1336-GM1 Remote I/O Communications Module - Manual (Page 76)

B–12 Supported Block Transfer Messages
Scattered Parameter Value
Write Scattered Parameter Value Write writes to a scattered list of
parameters and returns the status of each parameter. If any of the
states have errors, the parameter number is negative.
PLC Block Transfer Instruction Data
PLC request instruction length: 5 – 64 words
Drive response instruction length: 5 – 64 words
Figure B.8 Message Structure
Message Operation
Scattered Parameter Value Write writes data values to a
pre-defined group of device parameters in any order. You define the
number of parameters to write in word 2. The parameters to be
written to and their order is defined starting with word 3.
Header
Word 0
PLC Decimal Value
–32765 Header
Word 1
Data
Word 2
PLC Request
Header Word 0
Header Word 1
Header Word 2
Message Length
Message Length
PLC Decimal Value
3 — Message OK
–32765 — Message Error
Number of Parameter
Drive Response
Number of Parameter
5 – 64
Values to Write
Parameter Value ➀
Data Word 3
Data Word 4
Data Word 5
Parameter Number
Parameter Number
1
2
Parameter Number
3
Data Word 6
Data Word 7
Data Word 8
Parameter Value
Parameter Value
Data Word 62
Parameter Number
30
Data Word 63 Parameter Value
5 – 64
Values to Write
Data
Word 3
Data
Word 4
Data
Word 5
Parameter Number
Parameter Number
1
2
Data
Word 6
Data
Word 7
Data
Word 8
bit
0 or Error Code
0 or Error Code
Parameter Number
3
0 or Error Code
15
bit
15
bit
15
Data
Word 62
Data
Word 63
Parameter Number
30
0 or Error Code
bit
15
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•
•
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•
•
•
•
•
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•
•
•
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•
•
•
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1
2
3
30
➀ For parameter values greater than 32,767, you may need to enter the value in hexadecimal.