Just wondering does anyone know what :  unknown code M303 ....means in marlin here

3D Printing
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1

Just wondering does anyone know what : unknown code M303 …means in marlin

here is my log:

16:31:17.233 : N253 M303 E0 S235 C10 *119
16:31:17.235 : go 252 (executing M303)
16:31:17.235 : – Unknown code M303.
16:31:17.235 : ok 252 Q32 (0ms execute)
16:31:18.322 : N254 M105 *4
16:31:18.324 : go 253 (executing M105)
16:31:18.324 : ok 253 Q32 (1ms execute)
16:31:19.415 : N255 M105 *5
16:31:19.417 : go 254 (executing M105)
16:31:19.419 : ok 254 Q32 (1ms execute)
16:31:20.503 : N256 M105 *6
16:31:20.505 : go 255 (executing M105)
16:31:20.508 : ok 255 Q32 (2ms execute)
16:31:21.598 : N257 M105 *7
16:31:21.600 : go 256 (executing M105)
16:31:21.601 : ok 256 Q32 (1ms execute)
16:31:22.694 : N258 M105 *8
16:31:22.696 : go 257 (executing M105)
16:31:22.696 : ok 257 Q32 (1ms execute)
16:31:23.788 : N259 M105 *9
16:31:23.790 : go 258 (executing M105)
16:31:23.790 : ok 258 Q32 (1ms execute)
16:31:24.881 : N260 M105 *3

Thanks

2

// M303 - PID relay autotune S sets the target temperature. (default target temperature = 150C)

3

Sorry …I mean in this context …what the fault is? unknown code M303

4

@Cameron_King
it means that your firmware doesn’t know what to do with that code.

5

Thanks for the answers…I solved the problem by Flashing the board with the hex