9XTend™
OEM
RF
Module
–
Product
Manual
v1.2.4
©
2005
MaxStream,
Inc.
Confidential
&
Proprietary
49
Automatic DIP Switch Configurations
Each time an RF Modem is powered on, AT commands are sent to the on-board RF module as
dictated by the positions of the DIP switches. DIP switch configurations are sent automatically
during the power-on sequence and affect modem parameter values as shown in the table below.
Figure
B.4.
XTIB
‐
R
DIP
Switch
Table
B.2.
Power
‐
up
Options
‐
Commands
sent
to
the
module
as
result
of
DIP
Switch
Settings
(SW
=
DIP
Switch)
Switches
Condition
Behavior
Commands Sent During Power-up
If SW1 & SW2
are ON (up)
Restore Defaults
ATRE
(Restore Defaults)
ATWR
(Write defaults to non-volatile memory)
If SW1 is ON (up)
RS-232 Operation
ATCS 0
(RS-232, CTS flow control)
Switches 1 & 2
(Restore Defaults /
Serial Interfacing)
If SW1 is OFF
(down)
RS-485/422 Operation
ATCS 3
(RS-485 or RS-422 Operation)
If SW5 & SW6 are
OFF (down)
Multipoint Base
ATMY 0
(Source Address)
ATDT FFFF
(Destination Address)
ATMT 3
(Multi-Transmit option)
If SW5 is OFF
(down) & SW6
is ON (up)
Multipoint Remote
ATAM
(Auto-set MY, MY = unique)
ATDT 0
(Destination Address)
ATMT 0
(Multi-Transmit option)
ATRR A
(Retries)
If SW5 is ON (up) &
SW6 is OFF (down)
Point-to-Point
ATAM
(Auto-set MY, MY = unique)
ATDT FFFF
(Destination Address)
ATMT 3
(Multi-Transmit option)
Switches 5 & 6
(TX/RX Modes)
If SW5 is ON (up) &
SW6 is ON (up)
User Defined
Processor is disabled and AT Commands are not sent to
the modem (except for CS command as shown below.)
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 inside the RF modem.
To disable the processor, turn switches 5 and 6 ON (up). When switches 5 and 6 are ON, only the CS
command is sent [refer to table below].
Table
B.3.
User
Defined
Mode
(Switches
5
and
6
are
ON
(up))
DIP Switches ON (up)
Condition
Command Sent During Power-up
If CS = 0, 1, 2 or 4
CS parameter remains the same
SW1, SW5 and SW6
If CS = 3
ATCS 0
(RS-232 operation, CTS flow control)
SW2, SW5 and SW6
If CS = 2
ATCS 2
(GPO1 high)
SW5 and SW6 only
If CS = 0, 1, 2, 3 or 4
ATCS 3
(RS-485/422 Operation)
