User Manual

4–70 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
The All Info function allows you to read the set up information for a
trend file in a single message instead of reading the individual
parameters within the drive.
PLC Block Transfer Instruction Data
PLC Message Write instruction length: 3 words
PLC Message Read instruction length: 15 words
Header
Word 1
Header
Word 1
Header
Word 2
Header
Word 2
Header
Word 3
Trend Number
Message Structure
Header
Word 3
Trend Number
PLC Decimal Value
4098
PLC Decimal Value
4098 –– Message OK
–28670 –– Message Error
Message Length
3
Message Length
15
PLC Request –– PLC Message Write
Drive Response –– PLC Message Read
Data
Word 4
Trend Status
Data
Word 5
Trend Sample Size
Data
Word 6
Post Samples
Data
Word 7
Operator Data
Data
Word 8
Sample Time Rate
Data
Word 9
Mode
Data
Word 10
Comparison A Value
Data
Word 11
Comparison A Link
Data
Word 12
Comparison B Value
Data
Word 13
Comparison B Link
Data
Word 14
Sampling Input Parameter
Data
Word 15
Trend Output Parameter
Trend File
All Info