B-49
FX Series PLC User's Manual - Data Communication Edition
N:N Network
9 Troubleshooting
9.4 Checking Sequence Program
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
3. Ethernet port setting (in FX
3S
, FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs)
Verify that the same channel is not used in the Ethernet port setting. Do not set the channel used in N:N network.
After changing the setting, make sure to reboot the PLC's power.
4. N:N network and MODBUS communication (in FX
3S
, FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs)
If N:N network and MODBUS communication are set in a same channel, N:N network is executed, but
MODBUS communication is ignored.
In this case, the error "Communication port is occupied in another communication, (Error code 203)" is stored
in D8402/D8422 for the corresponding channel in the PLC.
For details of MODBUS communication errors and error devices, refer to the FX
3S
/FX
3G
/FX
3GC
/
FX
3U
/FX
3UC
Series User's Manual - MODBUS Serial Communication Edition.
5. Presence of VRRD and VRSC instructions
1) Except FX
3G
, FX
3U
and FX
3UC
PLCs
Verify that the VRRD and VRSC instructions are not used in the program.
If these instructions are used, delete them, reboot the PLC’s power.
2) In FX
3G
PLC
- In the case of the 14 points and 24-point type
Verify that the VRRD and VRSC instructions are not used in the program.
If these instructions are used, delete them, reboot the PLC's power.
- In the case of the 40 points and 60-point type
Verify that the VRRD and VRSC instructions are not used in the program.
If these instructions are used in the program, the communication function is not available in ch2.
Use ch1, or delete these instructions.
After deleting these instructions, reboot the PLC's power.
3) In FX
3U
and FX
3UC
PLCs
Verify that the VRRD and VRSC instructions are not used in the program.
If these instructions are used in the program, the communication function is not available in ch1.
Use ch2, or delete these instructions.
After deleting these instructions, reboot the PLC's power.
6. Presence of RS instruction (except FX
3S
, FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs)
Verify that the RS instruction is not used in the program.
If this instruction is used, delete it, reboot the PLC's power.
7. Presence of RS and RS2 instructions (in FX
3S
, FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs)
Verify that the RS and RS2 instructions are not being used for the same channel.
If these instructions are used for the same channel, delete them, reboot the PLC’s power.
8. Presence of EXTR instruction (in FX
2N
and FX
2NC
PLCs)
Verify that the EXTR instruction is not used in the program.
If this instruction is used, delete it, then reboot the PLC’s power.
9. Presence of IVCK, IVDR, IVRD, IVWR, IVBWR
*1
, and IVMC instructions (in FX
3S
, FX
3G
,
FX
3GC
, FX
3U
and FX
3UC
PLCs)
Verify that the IVCK, IVDR, IVRD, IVWR, IVBWR and IVMC instructions are not being used for the same
channel.
If these instructions are used for the same channel, delete them, reboot the PLC’s power.
*1.
Only available for FX
3U
and FX
3UC
PLCs.
10.Presence of ADPRW instructions (in FX
3S
, FX
3G
, FX
3GC
, FX
3U
and FX
3UC
PLCs)
Verify that the ADPRW instructions are not being used for the same channel.
If these instructions are used for the same channel, delete them, and reboot the PLC’s power.
11.Presence of FLCRT, FLDEL, FLWR, FLRD, FLCMD, and FLSTRD instructions (in FX
3U
and
FX
3UC
PLCs)
Verify that the FLCRT, FLDEL, FLWR, FLRD, FLCMD and FLSTRD instructions are not being used for the
same channel.
If these instructions are used for the same channel, delete them, reboot the PLC’s power.
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 ...
Page 817: ......