© Microhard Systems Inc.
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4.0 Configuration
Image 4-6-1: I/O > Status
4.6 I/O
4.6.1 I/O > Status
The IPn4G has 1 status input, which can be used with various alarms and sensors for
monitoring, telling the modem when certain events have occurred, such as an intrusion alarm on
a door, a temperature threshold has been exceed, or a generator has failed, out of fuel. Also
included is 1 output, that can be used to drive external relays to remotely control equipment and
devices. The Digital I/O pins are available on the back connector shared with the input power.
Input Status
The WebUI will display the current state the input. The I/O pins are all normally open so an open
status indicates that there is nothing connected to the input pin, or that an event has not
occurred to trigger the input. The inputs have a small wetting current (Vin) used to detect a
contact closure, and prevent false readings by any noise or intermittent signals, it has a
threshold sensitivity of 1.8V.
Output Status
The WebUI will display the current state of each control output. Using the Output menu
discussed in the next section, a user can remotely control the status of the output pins.
