ICP DAS USA tM-TH8 User Manual page 120

Note: The new Baud Rate and protocol will be effective after the next
power-on reset.
Error Response
00 Address
01 Function code
02 Exception code
120 tM-TH8 User Manual, Rev: A1.1 7MH-018-A11
1 Byte 1 to 247
1 Byte 0xC6
1 Byte 03: Baud Rate or mode out of
range, reserved bytes should
be filled with zero, incorrect
number of bytes received