Omron V680S-HMD63-ETN User Manual page 242

Section 9
Troubleshooting
System Connections Check Flowchart
START
Are the connector and
Cable connections OK?
Yes
Power ON
RUN LED?
Lit green
NORM/ERR LED?
Not lit
OK
RFID System
240
User's Manual
(Modbus TCP)
No
Connect them correctly.
Flashing green
NORM/ERR LED?
Not lit
Check the control
Check the control
signal line connection.
signal line connection.
Or initialize the settings.
Flashing red
Replace the Reader/Writer.
Initialize the settings.
Flashing red Lit red
Replace the Reader/Writer.
Is the rated voltage
Lit red supplied?
No
Supply the rated voltage.
Not lit
Yes
Replace the Reader/Writer.