|
|
|
|
5 |
| DIAGNOSTICS |
|
|
|
|
|
In case of trouble, check the following points, and remedy according to the troubleshooting guide in the 485PC- IF manual.
(1) Power LED
Lit : The extension cable is normally connected to the PC.
Otherwise : The extension cable is not connected correctly, or external 24 V DC power supply is not func- tioning correctly. Check and connect correctly.
(2) As for SD LED, RD LED, check and remedy according to the troubleshooting guide in the