User`s guide

9XTend™ RS-232/422/485 RF Modem User’s Guide
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4. RF Modem Configuration
4.1. Automatic DIP Switch Configurations
Each time the RF modem is powered-on, AT commands are sent to the on-board module as dic-
tated 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 4-01. RF Modem DIP Switches
IMPORTANT: To avoid overwriting previously stored custom configurations (due to the automatic con-
figurations that take place each time the RF modem is powered-on), it is necessary to disable a pro-
cessor located inside the 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].
Note: The results of SW 2, 5 & 6 ON and SW 5 & 6 ON are the same.
Table 4-01. Power-up Options - Commands sent as result of DIP Switch Settings (SW = DIP Switch)
Switches Condition Behavior Commands Sent During Power-up
Switches 1 & 2
(Restore Defaults /
Serial Interfacing)
If SW1 & SW2 are
ON (up)
Restore Defaults
ATRE
ATWR
(Restore Defaults)
(Write defaults to non-volatile memory)
If SW1 is ON (up) RS-232 Operation ATCS 0 (RS-232, CTS flow control)
If SW1 is OFF (down)
RS-485 or RS-422
Operation
ATCS 3 (RS-485 or RS-422 Operation)
Switches 5 & 6
(TX/RX Modes)
If SW5 & SW6 are
OFF (down)
Multipoint Base
ATMY 0
ATDT FFFF
ATMT 3
(Source Address)
(Destination Address)
(Multi-Transmit option)
If SW5 is OFF (down)
& SW6 is ON (up)
Multipoint Remote
ATAM
ATDT 0
ATMT 0
ATRR A
(Auto-set MY, MY = unique)
(Destination Address)
(Multi-Transmit option)
(Retries)
If SW5 is ON (up) &
SW6 is OFF (down)
Point-to-Point
ATAM
ATDT FFFF
ATMT 3
(Auto-set MY, MY = unique)
(Destination Address)
(Multi-Transmit option)
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.)
Table 4-02. User Defined Mode (Switches 5 and 6 are ON (up))
Only DIP Switches ON (up) Condition Command Sent During Power-up
SW1, SW5 and SW6
If CS = 0, 1, 2 or 4 CS parameter remains the same
If CS = 3 ATCS 0 (RS-232 operation, CTS flow control)
SW2, SW5 and SW6
If CS = 2 ATCS 2 (GPO1 high)
If CS = 0, 1, 3 or 4 ATCS 3 (RS-485/422 Operation)
SW5 and SW6 only
If CS = 2 ATCS 2 (GPO1 high)
If CS = 0, 1, 3 or 4 ATCS 3 (RS-485/422 Operation)