Delta C200 Series User Manual page 227

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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:
STX
Address
Function
Exception code
LRC CHK
END
The explanation of exception codes:
Exception
code
1
2
3
4
10
~ Reserved
Response Delay Time
Settings 0.0~200.0ms
This parameter is the response delay time after AC drive receives communication command as
shown in the following.
RS-485 BUS
Main Frequency of the Communication
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ASCII mode:
Illegal data value:
The data value received in the command message is not available for the AC drive.
Illegal data address:
The data address received in the command message is not available for the AC
motor drive.
Parameters are locked: parameters can't be changed
Parameters can't be changed during operation
Communication time-out.
PC or PLC command
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Chapter 11 Description of Parameter Settings|C200 Series
':' Address
'0' Function
'1' Exception code
'8' CRC CHK Low
'6' CRC CHK High
'0'
'2'
'7'
'7'
CR
LF
Explanation
Handling time
Response Delay Time
of the AC drive
Pr.09-09
11-128
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RTU mode:
01H
86H
02H
C3H
A1H
Factory Setting: 2.0
Response Message
of the AC Drive
Factory Setting: 60.00
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