User's Guide

Appendix B: AT Commands

B.1. Terminology

B.1.1. AT Command

AT command set is the HT in fact standardTH language for controlling modems. The AT command set was

developed by Hayes and is recognized by virtually all personal computer modems. WCS-232 provides

the extended AT command set to control and configure the serial parameters and Bluetooth connection.

B.1.2. AT Response

WCS-232 replies to AT commands with 4 kinds of message, ‘OK’, ‘ERROR’, ‘CONNECT’ and

‘DISCONNECT’.

B.1.3. Operation Mode

Mode

Description

Mode0

Waiting for AT commands

Mode1

Attempting to connect the last connected Bluetooth device

Mode2

Waiting for the connection from the last connected Bluetooth device

Mode3

Waiting for the connection from any other Bluetooth device

B.1.4. Operation Status