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9XTend ‐ PKG ‐ E? ? Ethernet ? RF ? Modem ? – ? Product ? Manual ? v2.x4x ? [2007.01.04]
PK (Maximum RF Packet Size) Command
<RF Interfacing> The PK command is used to set/
read the maximum size of RF packets transmitted
from an RF modem. The maximum packet size
can be used along with the RB and RO parameters
to implicitly set the channel dwell time.
If PK is set above 256 and BR is subsequently
changed to 0, PK will automatically be lowered to
256 and a warning will be raised (refer to the BR
(RF Data Rate) and WN (Warning Data) com-
mands for details).
AT Command: ATPK
Binary Command: 0x29 (41 decimal)
Parameter Range: 1 - 0x800 [Bytes]
Default Parameter Value:0x100* or 0x800*
(256 or 2048 decimal)
Number of bytes returned: 2
Related Commands: BR (RF Data Rate) RB
(Packetization Threshold), RO (Packetization
Timeout), WN (Warning Data)
Changes to the PK parameter may have a second-
ary effect on the RB (Packetization Threshold) parameter. RB must always be less than or equal to
PK. If PK is changed to a value that is less than the current value of RB, the RB value is automati-
cally lowered to be equal to PK.
* When BR = 0 (9600 baud), the maximum PK value is 0x100 (256d). When BR = 1 (115,200
baud), the maximum PK value is 0x800 (2048d).
PL (TX Power Level) Command
<RF Interfacing> The PL command is used to set/
read the power level at which the RF modem
transmits data.
AT Command: ATPL
Binary Command: 0x3A (58 decimal)
Parameter Range: 0 - 4
Parameter
0
1
2
3
4
Configuration
1 mW
10 mW
100 mW
500 mW
1000 mW (1 Watt)
Default Parameter Value: 4
Number of bytes returned: 1
PW (Pin Wake-up) Command
<Sleep (Low Power)> Under normal operation, an
RF modem in Cyclic Sleep Mode cycles from an
active state to a low-power state at regular inter-
vals until data is ready to be received. If the PW
parameter is set to 1, the SLEEP pin (GPI2) can
be used to awaken the modem from Cyclic Sleep.
When the SLEEP Pin is de-asserted (low), the
modem will be fully operational and will not go
into Cyclic Sleep.
Once the SLEEP pin is asserted, the modem will
remain active for the period of time specified by
the ST (Time before Sleep) parameter and will
return to Cyclic Sleep Mode (if no data is ready to
be transmitted). PW Command is only valid if Cyclic
AT Command: ATPW
Binary Command: 0x1D (29 decimal)
Parameter Range: 0 - 1
Parameter Configuration
0 Disabled
1 Enabled
Default Parameter Value: 0
Number of bytes returned: 1
Related Commands: SM (Sleep Mode), ST
(Time before Sleep)
Sleep has been enabled.
? ? 2007 ? MaxStream, ? Inc., ? Confidential ? & ? Proprietary ?‐? All ? Rights ? Reserved ?
????? 34
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