Product manual

XStream-PKG-E™ Ethernet RF Modem – Product Manual v4.2A

AT Commands

AT Commands can be used to adjust several modem characteristics:

• AT Command Mode Options

• Diagnostics

• Networking

• Serial Interfacing

• Sleep (Low Power)

A terminal program has been built into the X-CTU software and is located under the “Terminal”

tab. Use the following syntax when using terminal software to issue AT Commands.

Figure 12. Syntax for sending XStream OEM RF Module AT Commands:

NOTE: To read a parameter value stored in a register, leave the parameter field blank.

The preceding example would change the “Destination Address” of the RF Modem to “1F”. To

store the new value to the modem’s non-volatile (long term) memory, use the WR (Write)

Command [ATWR<CR>].

Parameters can be read and modified by sending AT Commands to the RF Modem via

MaxStream’s X-CTU Software or other serial communications software such as “HyperTerminal”.

XStream AT Commands are explained in further detail in MaxStream’s “XStream Advanced

Programming & Configuration” manual.

System Response

Once a command is sent to the RF Modem, the modem will parse and execute the command.

Upon successful execution of the command, the RF Modem will return an “OK” message. If the

execution of a command results in an error, the remainder of the command will not be executed

and the RF Modem will return an “ERROR” message.

Exit AT Command Mode

To exit AT Command Mode:

If no valid AT Commands are received within the time specified by CT (AT Command Mode

Timeout) Command, the RF Modem automatically returns to Idle Mode.

[or]

Send ATCN (Exit AT Command Mode) Command.