Instruction manual

Camera interfaces
The inputs can be connected directly to +5 V. If a higher voltage is used, an external resistor
se @+12 V a 820 Ω and @+24 V a 2.2 kΩ resistor.
controlled via the IO_INP_CTRL1..2
must be placed in series. U
 Voltages above +45 V may damage the optical coupler
The optical coupler inverts all input signals. Polarity is
register.
Input signal
Input polarity
Input
Input s tate
Opto-
coupler
Figure gram 23: Input block dia
MARLIN Technical Manual
Page 40