Rockwell Automation 1336T ControlNet Frn1.02 Rev 1.5 - Manual (Page 105)

4–63 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
The Trend Command function allows you to send a disable trend,
enable trend, or force trigger command to the drive for a specific
trend operation.
PLC Block Transfer Instruction Data
PLC Message Write instruction length: 4 words
PLC Message Read instruction length: 3 words
Header
Word 1 Header
Word 1
Header
Word 2 Header
Word 2
Header
Word 3
Trend Number
Message Structure
Data
Word 3
Trend Number
PLC Decimal Value
–28672
PLC Decimal Value
4096 –– Message OK
–28672 –– Message Error
Message Length
4 Message Length
3
PLC Request –– PLC Message Write
Drive Response –– PLC Message Read
Data
Word 4
Command
Message Operation
You can use the trend command to send one of the following
commands to the drive: disable trend, enable trend, or force trigger.
To send a Trend Command function, you need to specify both the
trend number and the command number.
The following are the valid trend numbers:
This number: Specifies that the command is to be sent for:
4096 Trend 1
8192 Trend 2
12228 Trend 3
16384 Trend 4
The following are the valid command numbers:
This number: Sends a command to:
0 Disable the specified trend.
1 Enable the specified trend.
2 Force a trigger for the specified trend.
Trend File
Trend Command