Rockwell Automation 1336T PLC Comm. Adapter, Series B, FRN 2.xx-3.xx - Manual (Page 206)

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Publication 1336 FORCE–5.13 –– September, 1998
The Trend Status function allows you to read the status of the
specified trend file.
PLC Block Transfer Instruction Data
BTW instruction length: 3 words
BTR instruction length: 4 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
4097
PLC Decimal Value
4097 –– Message OK
–28671 –– Message Error
Message Length
3 Message Length
4
PLC Request –– Block Transfer Write
Drive Response –– Block Transfer Read
Data
Word 4
Status
Message Operation
You can use the Trend Status function to read the status of the trend
specified by Trend 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 possible status values that can be returned in
word 4:
This
number:
Indicates that the trend is:
1 Stopped.
2 Running.
3
In the tripped trigger state. The condition has
become true, and the post samples are being taken.
4
In the forced trigger state. The trigger condition
was forced to be true so that the post samples
could be taken.
Trend File
Trend Status