NetComm Wireless 4G M2M Router
Digital inputs
There are several ways to connect a digital input. A digital input can be anything from a simple switch to a digital waveform or
pulses. The unit will read the voltage in as an analogue input and the software will decode it in a certain way depending on your
configuration.
Below is a contact closure type input, which is detecting an Earth. Pull up is activated for this to work.
The following input detects an input going high. The turn on/off threshold can be set in the software.
NAMUR Sensor
A NAMUR sensor is a range of sensors which conform to the EN 60947-5-6 / IEC 60947-5-6 standards. They basically have two
states which are reflected by the amount of current running through a sense resistor.
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