Mitsubishi Electronics F940GOT-SWD-E User Manual
Troubleshooting 6.
6-1
6.
Troubleshooting
This section describes troubleshooting during operation.
6.1
Power indication
When an abnormality has occurred, check the following points.
The POWER LED in the GOT is lit by the 5 V power supply inside the GOT. When the POWER
LED is extinguished, nothing is displayed on the screen or no key is accepted, the power sup-
ply may be insufficient.
LED is extinguished, nothing is displayed on the screen or no key is accepted, the power sup-
ply may be insufficient.
Especially when the power is supplied from the FX Series PLC, the following points are sus-
pected.
pected.
1) Much sensor current is used.
2) Many extension blocks are used.
Disconnect all equipment except the GOT from the +24 terminal in the FX Series PLC, and
check whether the GOT operates normally.
check whether the GOT operates normally.
When the display screen is dark, adjust "LCD CONTRAST" on the SET-UP MODE screen.
When the screen is still dark, it is recommended to replace the backlight (F9GT-40LTS).
When the screen is still dark, it is recommended to replace the backlight (F9GT-40LTS).
F940GOT-SWD-E/LWD-E