User's Manual

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Appendix B: AT Commands
B.1. Terminology
B.1.1. AT Command
AT command set is a Tin fact standardTH HTlanguageTH for controlling HTmodemsTH. The AT command set was
developed by HTHayesTH and is recognized by virtually all HT personal computerTH modems. IW05 provides the
extended AT command set to control and configure the serial parameters and Bluetooth connection.
B.1.2. AT Response
IW05 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 to the last connected Bluetooth device
Mode2
Waiting for a connection from the last connected Bluetooth device
Mode3
Waiting for the connection from another Bluetooth device
B.1.4. Operation Status
Status
Description
Standby
Waiting for AT commands
Pending
Executing tasks
Connect
Transmitting data
B.1.5. Security
Security
Description
Authentication
Pin Code (or Pass key)
Encryption
Data encryption
B.1.6. Symbols
The symbols are used for the description of command syntax as follows:
Symbols
Meaning
ASCII Code