Product manual
9XCite‐PKG‐R™RS‐232/485RFModem–ProductManualv2.1[2007.01.04]
©2007MaxStream,Inc. 31
SM (Sleep Mode) Parameter
<Non-AT Settable Parameter: Sleep Mode (Low
Power)> SM Parameter is used to adjust Sleep
Mode settings. By default, Sleep Mode is disabled
and the radio modem remains continually active.
SM Parameter allows the radio modem to run in a
lower-power state and be configured in one of
eight settings.
Cyclic Sleep settings wake the radio modem after
the amount of time designated by SM Command.
If the radio modem detects a wake-up initializer
during the time it is awake, it will synchronize
with the transmitting radio modem and start
receiving data after the wake-up initializer runs
its duration. Otherwise, it returns to Sleep Mode
and continue to cycle in and out of sleep until the
wake-up initializer is detected. If a Cyclic Sleep
setting is chosen, the ST, LH and HT parameters
must also be set as described in the "Sleep Mode" section of this manual.
ST (Time before Sleep) Parameter
<Non-AT Settable Parameter: Sleep Mode (Low Power)> ST Parameter sets the period of time (in
tenths of seconds) in which the radio modem remains inactive before entering into Sleep Mode.
For example, if the ST Parameter is set to 0x64 ("100" decimal), the radio modem will enter into
Sleep Mode after 10 seconds of inactivity (no transmitting or receiving). This command can only
be used if either Cyclic Sleep or Serial Port Sleep Mode settings have been selected using SM
(Sleep Mode) Parameter.
Parameter Range: 0x10 - 0xFFFF [x 100 ms]
# of bytes returned: 2
Default Parameter Value: 0x64 ("100" decimal)
Related Parameters: SM (Sleep Mode), LH (Wake-up Initializer Timer), HT (Time before Wake-
up Initializer)
VR (Firmware Version) Command
<AT Command: AT Command Options> Reads and returns the currently loaded firmware version
of the XCite Radio Modem.
AT Command: VR
Parameter Range: 0 - 0xFFFF [Read-only]
# of bytes returned: 2
WR (Write) Command
<AT Command: (Special)> WR Command writes all configurable parameters to non-volatile mem-
ory. Using WR Command saves parameters to the radio modem's persistent memory. (This means
that the parameters remain in the radio modem's memory until explicitly overwritten by future
uses of WR Command.)
AT Command: WR
Parameter Ranges: 0 - 8
Parameter Configuration
0No Sleep
1 Pin Sleep
2 Serial Port Sleep
3 Cyclic 0.5 seconds
4 Cyclic 1.0 seconds
5 Cyclic 2.0 seconds
6 Cyclic 4.0 seconds
7 Cyclic 8.0 seconds
8 Cyclic 16.0 seconds
Default Parameter Value: 0
Number of bytes returned: 1