Rockwell Automation 1336T ControlNet Frn1.02 Rev 1.5 - Manual (Page 79)

4–37 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
The Scattered Parameter Link Read message returns a list of up to 30
links in the source-to-sink order found in the drive. The links do not
have to be in consecutive order.
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
5
Header
Word 2
Data
Word 3
PLC Decimal Value
5 –– Message OK
-32763 –– Message Error
Data
Word 4
Number of Parameter
Links to Read
Parameter Number
1
Number of Parameter
Links to Read
Parameter
Number 1
Data
Word 6
Parameter Number
2
•
•
• •
Data
Word 62
Parameter Number
30
Bit 15
Parameter
Number 2
Bit 15
•
•
Data
Word 63
Parameter
Number 30
Bit 15
Data
Word 7
Data
Word 5
Data
Word 63
Message Structure
0
0
•
0
•
•
Data
Word 7
Data
Word 6
Data
Word 5
Data
Word 4
Data
Word 3
Header
Word 2
Header
Word 1
0
•
•
Data
Word 62
Source Parameter
Number 1
Source Parameter
Number 2
Source Parameter
Number 30
PLC Request –– PLC Message Write
Drive Response –– PLC Message Read
•
Message Operation
The Scattered Parameter Link Read function requested in the PMW
reads up to 30 non-consecutive links made in the drive. You request
the desired link information by defining the sink parameters in the
PMW message.
Link Read
Scattered Parameter Link Read