Instruction manual

73
7. EXAMPLE
1) RMC90 control SE800, key command = key_take
The command stream = F0h,21h,0eh,03h,12h,00h,00h,00h,00h,00h,00h,34h,33h,ffh
Length = 14 bytes=0eh
checksum= (f0h+21h+0eh+03h+12h+00h+00h+00h+00h+00h+00h) = 34h
checksum_low =04h+30h = 34h
checksum_high=03h+30h = 33h
2) SE800 return data,
The return data stream =
Fch,21h,14h,03h,00h,00h,00h,01h,01h,03h,01h,00h,00h,00h,00h,00h,00h,00h,3ah,33h,ffh
Length =21 bytes=15h
Checksum = (fch+21h+13h+03h+00h+01h+01h+03h+01h+0+0+0+0+0+0+0+0) = 3ah
checksum_low =0ah+30h = 3ah
checksum_high=03h+30h = 33h
Note: The SE800 automatically return data every video field to update the LED data,
And scan the remote control command every video field.