F-2 Supported Emulated Block Transfer Commands (Emulated Block Transfer Status Word)
Emulated Block Transfer Status
Word
When an operation is unsuccessful, header word 2 of the drive
response contains a negative value (bit 15 = 1).
If an error occurs, the drive also returns a status word to indicate the
reason for the failure. The location of the status word is typically
header word 4 in the drive response, but will depend on the message.
Figure F.1
Example Message Structure and Error Message Reply
The following table lists the error codes.
Header 1
PLC Request
Header Word 0
Header Word 1
Header Word 2
Message Length
Drive Response
4
Header 2
Data Word 3
Data
Header 1.OR.0x8000
Header Word 0
Header Word 1
Header Word 2
Message Length
Header 2
Header Word 3
Error Code
Value Description
0 No error occurred.
1 The service failed due to an internal reason, and the drive could not perform the
request.
2 The requested service is not supported.
3 An invalid value in the block transfer emulation request header word 2.
4 An invalid value in the block transfer emulation request header word 3.
5 An invalid value in the block transfer emulation request header word 2.
6 The data value is out of range.
7 There is a drive state conflict. The drive is in an incorrect state to perform the
function. The drive cannot be running when you perform certain functions.
efesotomasyon.com - Allen Bradley,Rockwell,plc,servo,drive
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