beautypg.com

Trend file – Rockwell Automation 1336T PLC Comm. Adapter, Series B, FRN 2.xx-3.xx User Manual

Page 219

background image

7–73

Publication 1336 FORCE–5.13 –– September, 1998

The Stored File Data function allows you to read the data values in
the stored data file buffer when the trigger condition occurs.

PLC Block Transfer Instruction Data

BTW instruction length:

3 words

BTR instruction length:

35 words

Header

Word 1

Header

Word 1

Header

Word 2

Header

Word 2

Header

Word 3

Trend Number

Message Structure

PLC Decimal Value

4101

PLC Decimal Value

4101 –– Message OK

–28667 –– Message Error

Message Length

3

Message Length

35

PLC Request –– Block Transfer Write

Drive Response –– Block Transfer Read

Data

Word 4

Data Sample 1

Data

Word 5

Data Sample 2

Data

Word 34

Data Sample 31

Data

Word 35

Data Sample 32


Header

Word 3

Offset

Trend

Number

(Bits 0 –11)

Message Operation

You can use the Stored File Data function to read the data points in
the stored buffer within the drive for the specified trend file.

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

Trend File

Stored File Data