Matrox Iris GTX Series, Installation And Technical Reference, Page: 38 / 100

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Chapter 2: Powering and connecting to your Matrox Iris GTX
Connecting devices to the auxiliary input signals
Matrox Iris GTX auxiliary input signals can be interfaced with a wide variety of
devices (such as proximity detectors). The Matrox Iris GTX auxiliary input signals
only detect when current flows between their AUX_IN pin and
AUX_IN_COMMON 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 reference .
Each of the four available auxiliary input signals has one dedicated pin (AUX_IN3,
AUX_IN4, AUX_IN5, and AUX_IN6, respectively) and shares its other pin
(AUX_IN_COMMON) with the other auxiliary input signals.
You can connect the auxiliary input signals in a sinking or sourcing configuration.
Since the auxiliary input signals share a common pin, they have to be all in a
sinking configuration or all in a 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:
[
Equivalent circuit only
AUX IN _ 3
AUX IN_COMMON _
24 V
Connecting four sinking devices to
the auxiliary input signals (sourcing)
Matrox Iris GTX Sourcing device
Sinking devices
AUX IN4 _
AUX IN5 _
AUX IN6 _
Sensing
Circuit
Sensing
Circuit
Sensing
Circuit
Sensing
Circuit
-
+
-
+
-
+
-
+
AUX IN_COMMON _
Connecting four sourcing devices to the
auxiliary input signal (sinking)
AUX IN _ 3
Sensing
Circuit
AUX IN _ 4
Sensing
Circuit
AUX IN _ 5
Sensing
Circuit
AUX IN _ 6
Sensing
Circuit
Sourcing devices Matrox Iris GTX Sinking device
-
+
-
+
-
+
24 V
-
+
24 V
+
24 V
+
24 V