SUPMEA SUP-P260-M4, Руководство пользователя

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Chapter 7 Communication Protocol
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7.3 Data frame structure:

Frame header: Starting byte, slave address.

End of frame: Check data (XOR check).

Parameter data: Function code operation
command/response, function code number, function code
setting/actual value.

Process data: Host control command/ slave state
response, master setting of host operation/actual value of
slave operation.
7.4 Format:

Serial port settings: 8-bit data,1-bit stop.

Example: 9600,N,8,1

Meaning
：
9600bps, No check, 8-bit data, 1-bit stop, serial
port baud rate supported by this
transmitter:1200,2400,4800,9600,
19200,38400,57600,115200

The polynomial of CRC check : 0xA001.
7.5 Communication format

Examples of reading command format
A. Send the reading command format:
AddressFunction
code
D ata
starting
(H)
D ata
starting
(L)
D ata
number
(H)
D ata
number
(L)
CRC16
(L) CRC16
(H)
0X01 0X03 0X00 0X00 0X00 0X01 0X84 0X0A