Connecting Devices To The Auxiliary Input Signals - Matrox 4Sight EV6 Installation And Hardware Reference

aux_in+
Sensing
circuit
aux_in-
Sinking to ground
Connecting a sourcing output device
to a sinking auxiliary input signal
Equivalent circuit only

Connecting devices to the auxiliary input signals

Matrox 4Sight EV6 auxiliary input signals can be interfaced with a wide variety
of devices (such as proximity detectors and linear/rotary encoders). The
Matrox 4Sight EV6 auxiliary input signals only detect when current flows
between their AUX_IN+ pin to their AUX_IN- pin. As such, an auxiliary input
signal must be connected to a device that controls the flow of current. When
current is detected, the signal is reported as on; otherwise, it is reported as off. In
software, you can enable an interrupt to be generated the moment current is
detected. For information on the electrical specifications of the on and off voltage
levels, see the Electrical specifications section, in Appendix B: Technical information.
You can connect the auxiliary input signals in a sinking or sourcing configuration.
The exact connection between the input signal, the connected device, and the
power source depends entirely on the type of device to which you connect. You
should essentially connect your device respecting the following:
Vcc
Sourcing from Vcc
Connecting to the auxiliary I/O interface
Vcc
aux_in+
Sensing
circuit
aux_in-
Sourcing from Vcc
Connecting a sinking output device
to a sourcing auxiliary input signal
Sinking to ground
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