MICRO-EPSILON surfaceCONTROL 3D 35 Series Assembly Instructions Manual page 6

Digital Signals
The four digital connections of the multi-function interface provided can operate option-
ally as inputs or outputs. They are configured using the software. All digital ports share
a joint ground GND GPIO. External auxiliary power (max. 30 V) is required to use the
outputs.
The digital signals are not suitable for brief signal pulses or time-critical signals.
The exception is port 1, which, when configured correctly, can be used as a hardware
trigger to start a measurement and is directly connected to the sequence control in the
sensor.
The functionality of the digital signals can be programmed (see
In addition to direction, polarity can also be switched for the inputs and outputs.
Internal sensor signals can be assigned to the digital outputs, for example, to control
additional connected devices.
Fig. 5 Programmable inputs and outputs
surfaceCONTROL 3D 3500
Inverter selection
(software side)
false
(IO) Line 1
true
false
(IO) Line 2
true
false
(IO) Line 3
true
false
(IO) Line 4
true
Fig. 5).
Direction selection
(software side)
Input
Trigger/GPIO1
(Output) Line 1
Output
Input
(Output) Line 2
Output
Input
(Output) Line 3
Output
Input
(Output) Line 4
Output
GPIO2
GPIO3
GPIO4
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