YASKAWA GPD 515/G5 Modbus RTU Technical Manual page 36

After calculating the CRC-16 upper and
lower values they are inserted into the
message format as shown below.
Slave Address = 2
0000 0010
0000 0111
Function Code = 7
0100 0001
CRC-16 Lower = 41h
0001 0010
CRC-16 Upper = 12h
6-16 The Message Format