Scattered Parameter Value Write - Allen-Bradley 1203 Series User Manual

B–12 Supported Block Transfer Messages
Scattered Parameter Value
Write
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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
PLC Request
Message Length
Header Word 0
5 – 64
PLC Decimal Value
Header Word 1
–32765
Number of Parameter Header Word 2
Values to Write
Parameter Number
Data Word 3
1
➀
Parameter Value
Data Word 4
1
Parameter Number
Data Word 5
2
Parameter Value
Data Word 6
2
Parameter Number
Data Word 7
3
Parameter Value
Data Word 8
3
•
•
•
•
•
•
Parameter Number
Data Word 62
30
Parameter Value
Data Word 63
30
➀
For parameter values greater than 32,767, you may need to enter the value in hexadecimal.
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.
Drive Response
Message Length
5 – 64
PLC Decimal Value
3 — Message OK
–32765 — Message Error
Number of Parameter
Values to Write
Parameter Number
bit
15
0 or Error Code
Parameter Number
bit
15
0 or Error Code
Parameter Number
bit
15
0 or Error Code
•
•
•
•
•
•
Parameter Number
bit
15
0 or Error Code
Header
Word 0
Header
Word 1
Data
Word 2
Data
Word 3
1
Data
Word 4
Data
Word 5
2
Data
Word 6
Data
Word 7
3
Data
Word 8
•
•
•
•
•
•
•
•
•
•
•
•
Data
Word 62
30
Data
Word 63