Chapter 12 Description of Parameter Settings|CFP2000 Series
12.1-09-11
Content Register Function
222AH
~
222DH
Reserved
222EH
PID reference（XXX.XX%）
222FH
PID offset（XXX.XX%）
2230H
PID output frequency（XXX.XXHz）
2231H Hardware ID
5. Exception response:
The AC motor drive is expected to return a normal response after receiving command
messages from the master device. The following depicts the conditions when no normal response
is replied to the master device.
The AC motor drive does not receive the messages due to a communication error; thus, the AC
motor drive has no response. The master device will eventually process a timeout condition.
The AC motor drive receives the messages without a communication error, but cannot handle
them. An exception response will be returned to the master device and an error message “CExx”
will be displayed on the keypad of AC motor drive. The xx of “CExx” is a decimal code equal to the
exception code that is described below.
In the exception response, the most significant bit of the original command code is set to 1, and
an exception code which explains the condition that caused the exception is returned.
Example:
ASCII mode: RTU mode:
STX ‘:’ Address 01H
Address
‘0’ Function 86H
‘1’ Exception code 02H
Function
‘8’ CRC CHK Low C3H
‘6’ CRC CHK High A1H
Exception code
‘0’
‘2’
LRC CHK
‘7’
‘7’
END
CR
LF
The explanation of exception codes:
Exception
code
Explanation
1 Function code is not supported or unrecognized.
2 Address is not supported or unrecognized.
3 Data is not correct or unrecognized.
4 Fail to execute this function code
~
Reserved
Response Delay Time
Factory Setting: 2.0
Settings 0.0~200.0ms
This parameter is the response delay time after AC drive receives communication command as
shown in the following.
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