GE AF-300 P11, User Manual

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12-8
Data subject to change without notice 7/07. © 2007 GE Drives
Data format [21] Auto tuning
0: Without forward rotation command
1: With forward rotation command.
0: Without reverse rotation command.
1: With reverse rotation command.
Example) If P04 (motor 1 auto - tuning)=1: Forward rotation
0000 0001 0000 0001
b
=0101
H
12-7 Communication Errors
Exception Response
When the drive receives a message that does not contain communication errors but the message can not be processed,
the drive will return an exception response. The exception response contains an error sub-code in the data field that
represents the problem.
Exception Response Errors
Sub-Code Name
Causes
1 Illegal Function Received RTU Function other than 03, 06 or 16
2 Illegal Data Address • The starting parameter address is an unused drive parameter..
•
The starting parameter address plus the offset refers to drive
parameter greater than the last parameter in a Function Code sort.
• The number of registers is greater than 16.
3 Illegal Data Value Data contains an out of range value for a drive parameter
7 Negative Acknowledge • Requested data cannot be changed while the drive is running.
•
The drive parameter function is owned by the network interface
option card and cannot be changed.
Communication errors
Communication errors occur when the drive receives an invalid message. The drive will not return a response to a
communication error. A code that represents the last communication error is stored in drive parameter M26. Typical
communication message errors include parity, framing, and CRC errors.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 0 0 REV FWD Data portion