Mitsubishi Electric MELSEC-FX3S Series - Page 213

D-25
6 Troubleshooting
6.6 Error Status Check
FX 3S /FX 3G /FX 3GC /FX 3U /FX 3UC PLC User's Manual - Analog Control Edition
FX3G-2AD-BD (2-channel Analog Input)
A
Common Items
B
FX
3U
-4AD
FX
3UC
-4AD
C
FX
3U
-4AD-ADP
D
FX
3G
-2AD-BD
E
FX
3U
-4DA
F
FX
3U
-4DA-ADP
G
FX
3G
-1DA-BD
H
FX
3U
-3A-ADP
I
FX
3U
-4AD-PT
-ADP
J
FX
3U
-4AD-PTW
-ADP
4. 2AD-BD hardware error (b6)
1) Description of error
The 2AD-BD is not operating properly.
2) Remedy
Check that the 2AD-BD is correctly connected to the PLC.
If the problem cannot be solved even after the above check, please contact your local Mitsubishi Electric
representative.
5. 2AD-BD communication data error (b7)
1) Description of error
A communication error is detected between the 2AD-BD and the PLC.
2) Remedy
Check that the 2AD-BD is correctly connected to the PLC.
If the problem cannot be solved even after the above check, please contact your local Mitsubishi Electric
representative.
6. Under-scale detection (b8, b9)
1) Description of error
The input analog value (current value) is below the specified lower limit.
This error is only detected for the current input mode, and indicates the input current is less than 2 mA.
2) Remedy
Check that the input analog value is within the specified range. Also check the wiring.