Rockwell Automation 1336T ControlNet Frn1.02 Rev 1.5 - Manual (Page 84)

4–42 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
The Scattered Parameter Link Write function writes a scattered
group of links to the drive.
PLC Block Transfer Instruction Data
PLC Message Write instruction length: 5-63 words
PLC Message Read instruction length: 5-63 words
Message Length
5-63
Header
Word 1
PLC Decimal Value
-32763
Header
Word 2
Header
Word 3
PLC Decimal Value
5 –– Message OK
-32763 –– Message Error
Data
Word 4
Number of Parameter
Links to Write Number of Parameter
Links to Write
Data
Word 7
•
• •
•
•
Data
Word 6
Data
Word 5
•
Status 1 or Error Code
Message Structure
Link Number 1
Parameter Number 2
•
•
•
•
Data
Word 6
Data
Word 5
Data
Word 4
Header
Word 3
Header
Word 2
Header
Word 1
0
•
Status 30 or Error Code
Data
Word 63
Parameter Number 30
•
Parameter
Number 1
Bit 15
Parameter
Number 2
Bit 15
Parameter Number 1
Link Number 2
Link Number 30
Data
Word 62
Data
Word 63
Status 2 or Error Code
Data
Word 7
Data
Word 62
Parameter
Number 30
Bit 15
PLC Request –– PLC Message Write
Drive Response –– PLC Message Read
Message Operation
The Scattered Parameter Link Write function in this PMW writes up
to 30 non-consecutive links in any order from the drive. Word 3 of
the PMW defines the number of links to write.
Link Write
Scattered Parameter Link Write