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AT commands
MAC/PHY commands
The following AT commands are MAC/PHY commands.
HP (Preamble ID)
The preamble ID for which the device communicates. Only devices with matching preamble IDs can
communicate with each other. Different preamble IDs minimize interference between multiple sets of
devices operating in the same vicinity.
When a device receives a packet it checks HP before the network ID, as it is encoded in the preamble
and the network ID is encoded in the MAC header.
Parameter range
0 - 9
Default
0
ID (Network ID)
Sets or displays the Vendor Identification Number (VID) of the device. Devices must have matching
VIDs in order to communicate. If the device uses OEM network IDs, 0xFFFF uses the factory value.
Parameter range
0x10 - 0x7FFF (user-settable)
0 - 0x0F and 0x8000 - 0xFFFF (factory-set)
Default
0x3332
MT (Broadcast Multi-Transmits)
Set or read the number of additional MAC-level broadcast transmissions. All broadcast packets are
transmitted MT+1 times to ensure they are received.
Parameter range
0 - 0xF
Default
3
PL (TX Power Level)
Sets or displays the power level at which the device transmits conducted power. Power levels are
approximate.
For XBee, PL = 4, PM = 1 is tested at the time of manufacturing. Other power levels are approximate.
On channel 26, transmitter power will not exceed -4 dBm.
The PRO XTC device requires the power supply to be above 3.3 V to ensure 30 dBm output power. The
following table shows the typical values over supply voltage.
XBee®/XBee-PRO XTend Compatible (XTC) DigiMesh RF Module User Guide
MAC/PHY commands
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