Troubleshooting; How To Diagnose By Led Indicator - Hitachi HX-RIO3 Series User Manual

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8. Troubleshooting

How to diagnose by LED indicator

LED Status
All LED turns off
MOD LED flashes green
MOD LED flashes red
MOD LED is red
I/O LED turns off
I/O LED flashes red
I/O LED is red
RUN LED
Green
RUN LED flashed red
Cause
- No power
- System power is not supplied.
- Failure of initialization EEPROM
parameter.
- Excess of expansion slot
- Excess of IO size
- Wrong IO composition
- Occurrence of EEPROM checksum
error
- Wrong address ID
- Occurrence critical error in firmware
- Failure of realization expansion
Module
- None expansion Module
-Failure of configuration baud rate
-Failure of initialization I/O
-Failure of exchanging I/O data
flashed
-PLC program stop
-Failure of Module Configuration
HX-RIO3 Series
Action
- Check main power Cable
- Contact Sales team and send
module for repair.
- Contact Sales team and send
module for repair.
- Use expansion slot up to 63.
- Compose that IO total size is not
excess.
- Check composition I/O Module
- Contact Sales team and send
module for repair.
- Check connector status both NA
series and expansion module.
- Check communication cable with
Master
- Check power for master.
- Use expansion slot up to 63.
- Compose that IO total size is not
excess.
NA series notice unidentified
expansion module ID. Check
status of expansion module.
Check status of expansion IO
connection.
Check the toggle switch is up.
Check the module hardware and
software configurations are the
same.