Mitsubishi FX3U-232-BD User Manual

D-79
FX Series PLC User's Manual - Data Communication Edition
Computer Link
8 Troubleshooting
8.5 Checking Error Codes
A
Common Items
B
N:N Network
C
Parallel Link
D
Computer Link
E
Inverter Communication
F
Non-Protocol Communication (RS/RS2 Instruction)
G
Non-Protocol Communication (FX
2N
-232IF)
H
Programming Communication
I
Remote Maintenance
Apx.
Discontinued models
8.5.2 Error codes in PLC
When an error is included in a message sent from the computer to a PLC, an error occurs in the PLC.
When such an error occurs, the serial communication error flag turns ON.
When PLCs other then FX
3U and FX3UC PLCs are used or when ch1 is used in an FX3U or FX3UC PLC, the
special auxiliary relay M8063 turns ON as an error flag. When ch2 is used in an FX
3U or FX3UC PLC, the
special auxiliary relay M8438 turns ON as an error flag.
When a serial communication error occurs, the error code is stored in D8063 if M8063 turns ON, or stored in
D8438 if M8438 turns ON.
The error code list is shown below:
Error codes are not cleared even if communication errors are reset. They are cleared when the PLC mode is
changed from STOP to RUN.
Device
Error
code
Error item Contents of error Action
D8063
(ch1)
6301
Parity, overrun or
framing error
The transfer data is abnormal.
Check the transfer specifications
set using parameters, and
execute communication again.
6305 Command error
When the station number was FF,
any command other than "GW"
was received.
Check the specified command,
modify it if necessary, and then
execute communication again.
6306 Monitoring timeout
The received message was
insufficient. Because normal
message was not received within
the time-out time setting, the
transfer sequence was initialized.
The message is insufficient.
Check the transfer program in the
computer, modify it if necessary,
and then execute communication
again.
D8438
(ch2)
3801
Parity, overrun or
framing error
The transfer data is abnormal.
Check the transfer specifications
set using parameters, and
execute communication again.
3805 Command error
When the station number was FF,
any command other than "GW"
was received.
Check the specified command,
modify it if necessary, and then
execute communication again.
3806 Monitoring timeout
The received message was
insufficient. Because normal
message was not received within
the time-out time setting the
transfer sequence was initialized.
The message is insufficient.
Check the transfer program in the
computer, modify it if necessary,
and then execute communication
again.

Mitsubishi FX3U-232-BD Specifications

General

Brand	Mitsubishi
Model	FX3U-232-BD
Category	Controller
Language	English