Mitsubishi Electric FX3U-ENET User Manual page 257

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
detection display) 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 set-
tings 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 (
effects of noise, and as a result communication with an external device may not be performed.
11 - 35
1)
Is initial
NO
(BFM#27=
"0001 ")
H
YES
[example] When communication is performed using a fixed buffer.
Subheader
Data length
60 00
H H
) terminals of the Ethernet module are not set, the communication line is closed (disconnected) due to the
Perform initial processing.
(See Subsection 5.2.1.)
If the initial processing parameters set
with FX Configuration-EN and the
(BFM#27=
sequence program for initial processing
"0001 ")
overlap, delete the sequence program
H
for initial processing.
See Subsection 11.5.1.
See Subsection 11.5.2.
See Subsection 11.5.3.
See Subsection 11.5.4.
See Subsection 11.5.5.
" or when the display LED COM.ERR (communication error
H
Subheader
Text
45 30
H
Subheader
MELSEC-F
The external device side
receives this portion
as an end code.
35 34
H H H
End code
11 - 35