Product manual

XStream‐PKG‐R™RS‐232/485RFModem–ProductManualv4.2B
©2005MaxStream,Inc.Confidential&Proprietary   19
4. ModemConfiguration
4.1. Automatic DIP Switch Configurations
Each time the RF Modem is powered-on, intelligence on the XIB-R Interface Board (RS-232/485
interfacing board located inside the RF Modem) sends AT Commands that program the RF Modem
based on positions of the DIP Switch. Automatic configurations that take place during the power-
on sequence affect stored RF Modem parameter values as shown in the tables below.
Figure4.1. RFModemDIPSwitch
Table4.1.RFModemPower‐upOptions(J7jumperandConfigSwitch)
Condition Behavior
If J7 is populated Processor is disabled and AT Commands are not sent to the RF Modem
If Config Switch is pressed Processor is disabled and RF Modem enters into AT Command Mode
If J7 is NOT populated and Config Switch
is NOT pressed
Execute logic as shown in table below.
Table4.2.ATCommandsSentasresultofDIPSwitchSettings(SW=DIPSwitch)
Condition Behavior
Restore Default Parameter Values of the RF Modem
If SW1 & SW2 are ON (up)
AT Commands sent: ATRE (Restore Defaults) Command
ATWR (Write) Command
Serial Interfacing Options
If SW1 is ON (up)
AT Commands sent: ATCS 0 (RS-232 Operation: CTS function for CTS line,
DB-9 pin 8)
ATCD 2 (DO3 - RX LED = low)
If SW1 is OFF (down)
AT Commands sent: ATCS 3 (RS-485 or RS-422 Operation)
ATCD 2 (DO3 - RX LED = low)
Parity Options
If SW5 & SW6 are OFF (down) AT Commands sent: ATNB 0 (parity = none)
If SW5 is OFF (down) & SW6 is ON (up) AT Commands sent: ATNB 1 (parity = even)
If SW5 is ON (up) & SW6 is OFF (down) AT Commands sent: ATNB 2 (parity = odd)
If SW5 is ON (up) & SW6 is ON (up) AT Commands sent: ATNB 5 (parity = 9th bit data over-the-air, v4.30 only)
Exit AT Command Mode
Always AT Commands sent: ATCN (Exit AT Command Mode)
IMPORTANT: To avoid overwriting previously stored custom configurations (due to the automatic
configurations that take place each time the RF Modem is powered-on), it is necessary to disable a
processor located on the XIB-R interface board. To disable the processor, populate the J7 jumper of
the XIB-R Interface Board. By default, J7 is not populated.