User manual

Chapter 2 Part Names and Functions

2-3

2.2 XBT OT4320 Series

A: Status LED

This LED indicates the OT’s status, e.g. power

input, firmware RUN status.

B: CF Card Access Lamp

This lamp lights up when a CF Card is inserted and

the CF Card cover is closed. It will remain lit if you

open the CF Card cover while the CF Card is

inserted.

C: Power Plug Connector

D:Serial Interface (COM1)

RS-232C serial interface. 9-pin SUB-D plug type

connector.

E: Serial Interface (COM2)

RS-422/RS-485 serial interface. 9-pin SUB-D plug

type connector.

LED OT Operation

Green (lit)

Normal operation (power

is ON) or OFFLINE

operation.

Orange

(blinking)

During software startup.

Red (lit) Power is ON.

Not lit Power is OFF.

Access Lamp Indicates

Green ON

The CF Card is inserted

and the CF Card Cover

is closed. Or, the CF

Card is being accessed.

Green OFF

The CF Card is not

inserted or is not being

accessed.

Front

Back

Right side