ZP9D-115RM-LR Radio Modem
37
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
module. 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) commands
for details).
Changes to the PK parameter may have a secondary 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 automatically
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
module transmits data
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)
AT Command: ATPL
Binary Command: 0x3A (58 decimal)
Parameter
Range:
0 - 4
Parameter
Configuration
0
1 mW
1
10 mW
2
100 mW
3
500 mW
4
1000 mW (1 Watt)
Default Parameter Value: 4
Number of Bytes Returned: 1
