Pk (Maximum Rf Packet Size) Command - Digi XTend User Manual

Polling Operations: The 'Polling Base' (MD = 3) cycles through a sequential range of addresses, polling each 'Polling
Remote' (MD = 4). The base then waits for a response and proceeds to the next 'Polling Remote'. Each 'Polling
Remote' responds by sending data from the DI buffer following the RB and RO parameters. When there is no eligible
data to send, the 'Polling Remote' will not respond. The 'Polling Base' will move to the next address in the polling
sequence after a short delay.
AT Command: ATPE
Binary Command: 0x46 (70 decimal)
Parameter Range: 0 - 0xFFFF
Default Parameter Value: 0
Number of bytes returned: 2
Legacy Modem Minimum Firmware Version Required: 2.x20
Related Commands: MD (RF Mode), PB (Polling Begin Address), PD (Minimum Polling Delay)

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).
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)
XTend RF Module User Guide
Command descriptions
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