M.17.6.5 Maintenance Menu - Check COM1/COM2/LAN

Check the send and receive lines for RS-232C, RS-422 and network communication. Use this check when an error occurs.

To check COM1 or COM2, you need to connect a loopback cable. When the operation is normal, [OK] is displayed. When there is a problem, an error message is displayed.

COM1/RS232C

Check whether the display unit's COM1 RS-232C interface is operating properly.

COM1/RS422

Check whether the display unit's COM1 RS-422 interface is operating properly.

COM2/RS232C

Check whether the display unit's COM2 RS-232C interface is operating properly.

COM2/RS422

Check whether the display unit's COM2 RS-422 interface is operating properly.

LAN

Runs internal loopback check. Runs a MAC address check.

USB-LAN

When the EZ LAN Adapter is connected, runs internal loopback check.