How can i write CRC16 program? (in modbus)

hello..

I'm trying to run motor using MODBUS communication.

Please help me the CRC16 calculation program.

If enter query : 01100058001020000000000000000200002134000007D0000005DC000005DC000003E800000001 ,

the result is : 1C08 ← correct.

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Motor control program I made(but,There is no CRC16 calculation program, so i have to write it by hand. )

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https://crccalc.com/

[Atsushi Ueno]

How about using the code posted on File Exchange?

Modbus_CRC16 - File Exchange - MATLAB Central (mathworks.com)

Modbus_CRC( Message_Modbus ) - File Exchange - MATLAB Central (mathworks.com)

[Uihwan Kim]

@Atsushi Ueno thank you. but, i cant use bitsrl function;;

Answer 1

[Steven Lord]

See the swapbytes function.

[Uihwan Kim]

okay!! thanks