Rockwell Automation 1336T ControlNet Frn1.02 Rev 1.5 - Manual (Page 82)

4–40 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
The Continuous Parameter Link Write message writes a list of up to
60 consecutive links to the drive, starting at the defined sink
parameter.
PLC Block Transfer Instruction Data
PLC Message Write instruction length: 5-64 words
PLC Message Read instruction length: 5-64 words
Message Length
5-64
Header
Word 1
PLC Decimal Value
-32764
Header
Word 2
Header
Word 3
PLC Decimal Value
4 –– Message OK
-32764 –– Message Error
Data
Word 4
Number of Parameter
Links to Write Number of Parameter
Links to Write
•
•
•
•
•
Data
Word 6
Data
Word 5
•
Status Number 1
Message Structure
Link Number 1
Link Number 2
•
•
•
•
Data
Word 6
Data
Word 5
Data
Word 4
Header
Word 3
Header
Word 2
Header
Word 1
0
•
Status Number 60
Data
Word 64
•
Status Number 2
Starting Parameter
Number
Parameter Number 1
Link Number 60
Data
Word 64
PLC Request –– PLC Message Write
Drive Response –– PLC Message Read
Message Operation
The Continuous Parameter Link Write function specified in the
PMW writes a set of consecutive links to the drive. Word 3 of the
PMW defines the number of links to be written. Word 4 defines the
starting sink parameter. The consecutive link source parameters are
then listed in the remaining header words. You can make up to 60
continuous links with this block transfer function.
Link Write
Continuous Parameter Link Write