Definition of Indicators
| Indicator type |
Color |
Status |
Meaning |
| Power supply PWR |
Green |
On |
The power supply is normal |
| Off |
The power supply is abnormal or there is no corresponding power loading. |
| Running indicatorRUN/STOP |
Green/Yellow/Red |
Green On |
The main controller is in RUN state, and the user program is running. |
| Green Flash (1Hz) |
The user program area is empty or the user project is invalid |
| Yellow On |
The main controller is in STOP state, and the user program has stopped |
| Yellow Flash (1Hz) |
The main controller is undergoing RTE upgrade. |
| Red Flash |
Some or more diagnosable faults of controller (flashing at 1Hz N times, OFF for 30s, cycle.) |
| Communication indicatorCOM |
Green/Yellow |
Green Flash (1Hz) |
Serial communication is sending and receiving data |
| Green Off |
Serial communication is not sending or receiving data |
| Yellow Flash (1Hz) |
Any network port is sending and receiving data |
| Yellow OFF |
No data transmission or reception on the network port |
| Green/Yellow Flash alternately (1Hz) |
Both serial and network ports are sending or receiving data. |
| Hard disk indicator HDD |
Blue |
Flash(1Hz) |
Be able to access HDD hard drive or the hard drive is performing read and write operations. |
| OFF |
Unable to access or no access to HDD hard drive. |
Last modified: 2025-06-13
