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LED Display
The LED status (turned ON, blinking or turned OFF) indicates the following state.
| LED Name | Color |
Status |
Definition of status |
Description (common errors) |
|---|---|---|---|---|
SYS |
Green |
Turned ON |
Normal state |
・Unit is in normal state. |
| Green/Yellow | Blinking |
Running | ・Running | |
Yellow |
Turned ON |
Running |
・Running |
|
- |
Turned OFF |
No power supply |
・Controller is turned off. |
|
MNS |
Green |
Turned ON |
Connection of communication is completed. |
・Network is in normal state (communication is established). |
Blinking |
Connection of communication is not completed. |
・Network is normal, but communication is not established. |
||
Green, Red, Turned OFF |
Blinking |
In self-testing | Power is ON, and self-test is running.Color changes every 0.25 second. | |
| Red | Turned ON |
Fatal communication error |
Communication error (unable to communicate on the network) ・Node address duplicated ・Busoff detected |
|
Blinking |
Minor communication error |
・I/O Timeout, etc. |
||
- |
Turned OFF |
Off-line state |
・No network power supply ・No node other than yours |