Mitsubishi MELSEC-F User Manual page 260

11 TROUBLESHOOTING
processing normally completed
Check and fix the faulty part for each
communication processing.
Sending error in fixed buffer communication
Receiving error in fixed buffer communication
Error in the MC protocol communication
Send error during communication by e-mail
Receive error during communication by e-mail
1 See Section 11.1 when the value of BFM#27 is "0000
lights up.
(Check an error code that is stored in the buffer memory in reaction to an error occurrence, then check the contents of the error and
take corrective actions by referring to Section 11.4.)
2 Error codes not found in the error code list may be returned to the external device side if the communication data settings on the
Ethernet module side (see Section 4.6) and the data code settings on the external device side are different.
The Ethernet module cannot decode commands correctly if data with different data codes is received. The Ethernet module returns
error responses according to the communication data code settings.
External device side
(Set to binary code)
Ethernet module side
(Set to ASCII code)
3 If the FG terminals of the Ethernet module are not set, the communication line is closed (disconnected) due to the effects of noise, and
as a result communication with an external device may not be performed.
11 - 35
1)
Is initial
(BFM#27=
0001 )
H
YES
[example] When communication is performed using a fixed buffer.
Subheader
Data length
60 00
H H
Perform initial processing.
(See Section 5.2.1.)
If the initial processing parameters set
NO
with FX Configurator-EN and the
(BFM#27=
sequence program for initial processing
0001 )
overlap, delete the sequence program
H
for initial processing.
See Section 11.5.1.
See Section 11.5.2.
See Section 11.5.3.
See Section 11.5.4.
See Section 11.5.5.
" or when the display LED COM.ERR (communication error detection display)
H
Subheader
Text
Subheader
The external device side
receives this portion
as an end code.
45 30 35 34
H H H H
End code
MELSEC-F
11 - 35