Download FA-M3 Sequence CPU-Modbus/TCP Functions

2-5
2.5
Response Error Code
This section describes the response error codes.
z If Error Response is Returned
This module returns a response as shown below if there is a mismatch in the PDU
during a request or an error during processing.
(PDU at Faulty Completion)
Function Code
Data
XX
Error Code
1-byte
1-byte
F020501.VSD
Figure 2.5.1 PDU at Faulty Completion
The request function code +$80 value is inserted in the function code (XX).
z Response Error Code
Table 2.5.1
Error Code
$01
$02
$03
$04
$0A
$0B
Response Error Code
Meaning
Function Code Error
Address Error
Amount Error
Processing Error
CPU Number Error
Timeout
Cause
There is no function code.
Out-of-range address was specified.
Out-of-range amount was specified.
Write protect is specified.
Unit ID that is not from 1 to 4 was specified.
CPU specified by the unit ID does not exist.
IM 34M06P15-03E
2nd Edition: Jan. 31, 2012-00