D-89
FX Series PLC User's Manual - Data Communication Edition
Computer Link
8 Troubleshooting
8.5 Checking Error Codes
A
Comm
on I
te
ms
B
N:
N N
etwo
rk
C
Paral
le
l Li
nk
D
Com
puter Li
nk
E
In
verter
C
omm
uni
cation
F
N
on-Proto
col
C
ommunicati
on
(R
S/RS
2 Instru
ction
)
G
No
n-
Protoc
ol
Co
mmuni
ca
tion
(FX
2N
-2
32IF)
H
Programm
ing
Comm
uni
cation
I
Re
mo
te
Ma
intenance
Apx.A
D
isco
nti
nued
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
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs are used or when ch1 is used in an FX
3G
,
FX
3GC
, FX
3U
or FX
3UC
PLC, the special auxiliary relay M8063 turns ON as an error flag. When ch2 is used in
an FX
3G
, FX
3GC
, FX
3U
or FX
3UC
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:
Serial communication errors and serial communication error code are not cleared even when communication
is restored.
Serial communication errors are cleared in FX
3S
, FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs when the power is
turned off and on.
Serial communication errors are cleared in other PLCs when the mode is switched 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.
Summary of Contents for FX-485ADP
Page 2: ......
Page 120: ...B 2 FX Series PLC User s Manual Data Communication Edition N N Network ...
Page 188: ...C 2 FX Series PLC User s Manual Data Communication Edition Parallel Link ...
Page 244: ...D 2 FX Series PLC User s Manual Data Communication Edition Computer Link ...
Page 344: ...E 2 FX Series PLC User s Manual Data Communication Edition Inverter Communication ...
Page 700: ...H 2 FX Series PLC User s Manual Data Communication Edition Programming Communication ...
Page 752: ...I 2 FX Series PLC User s Manual Data Communication Edition Remote Maintenance ...
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