Digi XBee3 802.15.4 User Manual

Networking Maximum payload
Digi XBee3® 802.15.4 RF Module User Guide
70
This enhancement in the XBee/XBee-PRO S2C 802.15.4 and XBee3 802.15.4 RF Modules can produce
problematic behaviorunder certain conditions if the receiver is a Legacy 802.15.4 module (S1
hardware).
The conditions are:
n The sender is an XBee3 802.15.4 RF Module, and the receiver is a Legacy 802.15.4 module.
n The sender has the Digi header enabled (MM = 0 or 3) and RR (XBee Retries) > 0.
n The sender sends broadcast and unicast messages at the same time to the Legacy 802.15.4
module without waiting for the transmission status of the previous packet.
The effect is:
n The receiver may display duplicate packets.
The solution is:
n Set bit 0 of the C8 (802.15.4 compatibility) parameter to 1 to enable TX compatibility mode in the
XBee3 802.15.4 RF Module. This eliminates the transmission queue to avoid sending to multiple
addresses simultaneously. It also limits the packet size to the levels of the Legacy 802.15.4
module.
For information on the specific differences between an XBee3 and Legacy 802.15.4 devices, refer to
the Digi XBee3 802.15.4 Migration Guide.

Digi XBee3 802.15.4 Specifications

General

Brand	Digi
Model	XBee3 802.15.4
Category	Control Unit
Language	English