CRC and frame playground
Build, inspect and verify ASCII frames before wiring them into your server.
Use synthetic values here. Do not paste a production PW, broker credential or real device identifier into a public browser.
01
Build a frame
Enter the command and visible fields without braces or CRC.
CRC16/MODBUS
6F75Wire frame
{CQ,17000000,0,6F75}02
Inspect and verify
Paste one complete ASCII frame and compare its CRC with the test PW above.
CRC validCQ · 2 fields · 6F75 / 6F75