get address (must confirm):
7E 00 04 08 52 53 4C 06

send packet from coordinator to router1:
7e 00 0f 10 01 00 13 a2 00 40 3c f0 5c ff fe 00 00 66 0e

7e - start delimiter
00 - length MSB
0f - length LSB 
10 - frame type
01 - send ACK
00 - 64-bit destination Address MSB
13 - 64-bit destination Address
a2 - 64-bit destination Address
00 - 64-bit destination Address
40 - 64-bit destination Address
3c - 64-bit destination Address
f0 - 64-bit destination Address
5c - 64-bit destination Address LSB
ff - 16-bit destination Network Address MSB (fffe = broadcast or unknown)
fe - 16-bit destination Network Address LSB 
00 - broadcast radius
00 - options
66 - data
0e - checksum

send packet from router1 to coordinator:
7e 00 16 10 01 00 00 00 00 00 00 00 00 ff fe 00 00 54 78 44 61 74 61 30 41 3a