Block transfer status word – Rockwell Automation 1336T PLC Comm. Adapter, Series B, FRN 2.xx-3.xx User Manual

Page 148

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7–2

Publication 1336 FORCE–5.13 –– September, 1998

In most cases, header word 2 of the drive response contains a
negative value (bit 15 = 1) when a block transfer operation is not
successful. A status word is also usually returned and indicates the
reason for the block transfer failure. The location of the status word
is typically header word 4 in the drive response, but will vary
depending on the message.

The following status word codes are defined:

This

value:

Has the following meaning:

0

No error occurred.

1

The service failed due to an internal reason and the
drive could not perform the request. Some messages
are read only or write only.

2

The requested service is not supported.

3

An invalid value is in block transfer request header
word 2.

4

An invalid value is in block transfer request header
word 3.

5

An invalid value is in block transfer request header
word 4.

6

The data value is out of range.

7

A drive state conflict occurred. The drive is in an
incorrect state to perform the function. The drive
cannot be running when certain functions are
performed.

Block Transfer Status
Word

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