![](http://pdfasset.owneriq.net/0/04/004eca3f-2f7f-458d-b19f-173179ba05cd/004eca3f-2f7f-458d-b19f-173179ba05cd-bga.png)
In case of trouble, check the following points, and remedy according to the troubleshooting guide in the 485PC-
IF manual.
(1) Power LED
Lit
Otherwise
(2) As for SD LED, RD LED, check and remedy according to the troubleshooting guide in the 485PC-IF manual.
5
DIAGNOSTICS
: The extension cable is normally connected to the PC.
: The extension cable is not connected correctly, or external 24 V DC power supply is not func-
tioning correctly. Check and connect correctly.