Digi XBee 3 ZigBee User Manual page 261

Frame descriptions
Frame data fields
RF data
Checksum
Send a transmission to the coordinator without specifying the coordinator's 64-bit address. The API
transmit request frame should look like:
0x7E 0x00 0x16 0x10 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xFF
0xFE 0x00 0x00 0x54 0x78 032 0x43 0x6F 0x6F 0x72 0x64 0xFC
Where 0x16 = length (22 bytes excluding checksum).
Digi XBee® 3 Zigbee® RF Module
Transmit Request frame - 0x10
Offset Example
17 0x54
18 0x78
19 0x44
20 0x61
21 0x74
22 0x61
23 0x30
24 0x41
25 0x13
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