B-21, Trip fault queue number read, Plc block transfer instruction data – Rockwell Automation 1336-GM1 Remote I/O Communications Module User Manual

Page 85: Message operation, Example

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Supported Block Transfer Messages

B–21

Trip Fault Queue Number Read

Trip Fault Queue Number Read provides the fault queue number of
the fault that caused the device to trip.

PLC Block Transfer Instruction Data

PLC request instruction length: 3 words
Drive response instruction length: 4 words

Figure B.14

Message Structure

Message Operation

Trip Fault Queue Number Read provides the number of the entry in
the fault queue that tripped the device in word 3 of the drive response.
The fault queue number is 0 when the device is not faulted.

If an error has occurred in the block transfer, word 1 of the response is
negative.

Example

In this example, the device has stored a fault in the first entry of the
fault queue that caused the drive to trip. Word 3 of the response
indicates the entry number.

Data File Format

* Example only — These values vary depending on parameters and products.

Header

Word 0

PLC Decimal Value

1794

Header

Word 1

Header

Word 2

PLC Request

Header Word 0

Header Word 1

Header Word 2

Message Length

Message Length

PLC Decimal Value

1794 — Message OK

–30984 — Message Error

0

Drive Response

3

0

4

Header

Word 3

Number of Trip Fault

or Error Code

0

1

2

3

4

5

6

7

8

9

PLC request

3

1794

0

Drive response

4

1794

0

1*

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