Allen-Bradley Bulletin 1203 Series User Manual page 50

5–2
Scattered Parameter Value
Read
1203–5.5 September 1995
The Scattered Parameter Value Read function reads a scattered list of
parameters.
PLC Block Transfer Emulation Instruction Data
PLC request instruction length: 5–63 words
Drive response instruction length: 5–63 words
Message Structure
PLC Request
Message Length
Header Word 1
5–63
PLC Decimal Value
Header Word 2
3
Number of Parameter
Data Word 3
Values to Read
Parameter Number
Data Word 4
1
0
Data Word 5
Parameter Number
Data Word 6
2
Data Word 7
0
Parameter Number
Data Word 8
3
0
Data Word 9
Parameter Number
Data Word 62
30
0 Data Word 63
Drive Response
Header
Message Length
5 – 63 Word 1
PLC Decimal Value
Header
3 –– Message OK
Word 2
–32765 –– Message Error
Data
Number of Parameter
Values to Read
Word 3
Data
Parameter Number
bit
15
1 Word 4
Parameter Value or
Data
Status Word
Word 5
1
Data
Parameter Number
bit
2
15
Word 6
Parameter Value or
Data
Status Word
Word 7
2
Data
Parameter Number
bit
15
3 Word 8
Parameter Value or
Data
Status Word
Word 9
3
Data
Parameter Number
bit
15
30
Word 62
Parameter Value or
Data
Status Word
Word 63
30