Product manual

XStream‐PKG‐T™TelephoneRFModem–ProductManualv5.x00[2006.02.24]

2.2.2. AT Command Mode

This section illustrates how to configure the on-board RF Module using standard AT Commands.

Refer to p

17 for programming examples that implement the instructions on this page.

Hardware Setup:

The on-board RF Module is configured through the DB-9 connector of the PKG-T RF Modem. To

configure the on-board RF Module, DIP Switch 2 must be ON (up) and both and

must be asserted (+10V RS-232 logic). Most serial communications software (including

MaxStream’s X-CTU Software) will assert and when the serial com port is opened.

1. Attach an RS-232 cable to the DB-9 connectors of the XStream-PKG-T RF Modem and a PC.

2. Move DIP Switch 2 ( Control) to the ON (up) position.

3. Launch MaxStream’s X-CTU™ Software and select the “PC Settings” Tab.

[Refer to the X-CTU section of Appendix B for information about X-CTU.]

In the ‘Com Port Setup’ section, match the Baud, Parity and Stop Bit settings of the PC com

port with those of the RF Module. [Refer to BD & NB commands.]

Figure2‐08. HardwareSetupforConfiguringtheRFModule

Enter AT Command Mode:

Enter the AT Command Mode Sequence using the “Terminal” tab* of the X-CTU Software.

[OR]

Assert (low) the pin and turn the power going to the modem off and back on. This can

be achieved by (i.) simultaneously pressing the Reset and Config switches [Figures 1-03b & 1-

03c], (ii.) releasing the Reset Switch, (iii.) then after 1 sec. releasing the Config Switch. The RF

Module then enters AT Command Mode at the module’s default baud rate.

* The “Modem Configuration” tab can also be used to send AT commands to the RF module.

When using this tab, make sure the settings under the ‘AT Command Setup’ sub-section of the

“PC Settings” tab match the AT Command Mode Sequence parameters stored in the RF Module.

The AT Command Mode Sequence (default parameter values are shown in parenthesis):

• Observe Guard Time Before (ATBT = 0x0A, no characters sent for one second)

• Enter three copies of the Command Sequence Character (ATCC = 0x2D, ASCII “---“)

• Observe Guard Time After (ATAT = 0x0A, no characters sent for one second)

IMPORTANT: The default Command Sequence Character (“-“) is unique to the XStream-PKG-T

Telephone RF Modem. All other MaxStream Radio Modems use the “+” character as their default.

Send AT Commands:

When using the “Terminal” tab of the X-CTU Software, send AT Commands and parameters using

the syntax shown below:

Table2‐02. SyntaxforsendingRFModuleATCommands:

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

The preceding example would change destination address of the RF Module to “1F”. To store the

new value to non-volatile (long-term) memory, the WR (Write) Command must follow.

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