Baud Rate Example - B&B Electronics Command Response Protocol HVD100A3 Product Manual

Baud Rate Example

To set the PC baud rate to 57,600 baud, N,8,1, format the message as
follows.
Byte Byte
Number Value
Hex
1 01
2 05
3 08
4 01
5 03
6 08
7 00
8 00
9 1A
The first byte is the start of frame and always 01. Next is the
number of control bytes (05). There are 5 bytes in the control section (in
gray). Byte number 3 sets the HDV100A3 to an internal operation (08). Byte
4 is the internal function to be executed; (01) is the change baud command.
Bytes 5, 6, and 7 set the baud rate, parity, stop bits and word length. Next is
the number of data bytes, in this case there are no data bytes. Last is the
checksum, the value is the 8 bit addition of bytes 1 to 8.
8
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Byte Function
Start of frame
Number of control bytes
Command byte (08 = internal command)
Function Bbte (01 = change baud)
UB3
Baud 1
Baud 2
Number of data bytes
Checksum
HDV100A3 Command & Response Manual-1306cr