Velocity Edge GX440 User's Guide download pdf (Page 253)

Rev 1 Oct.13 253

13: I/O Configuration

The I/O tab in ACEmanager is applicable across all Sierra Wireless

AirLink devices that feature I/O ports.

You can use the input/outputs on AirLink devices to generate reports

based on a threshold being crossed, a switch being open or closed,

or the number of times a switch has changed its state.

Use the Events Reporting screen to configure reports. (See Events

Reporting Configuration on page 207.) Use the I/O screen to view the

current state of the analog and digital inputs, to turn the relays on and

off, and to configure the units you want used in the reports based on

analog inputs.

Analog inputs

Analog inputs monitor a voltage range in small increments. This

allows you to monitor equipment that reports status as an analog

voltage. Examples include:

• Power supply voltage

• Temperature, weight, volume, flow represented as voltage

• An incremental gauge with a voltage output

• Vehicle battery voltage

Using Event Reporting, you can create event thresholds, which when

crossed (either higher or lower) generate a report to a defined

external system. See Events Reporting Configuration on page 207.

The raw data for the changes being monitored is in volts, but you can

use the I/O Configuration screen in ACEmanager to convert voltage

to the desired units of measurement.

Digital inputs

Digital inputs monitor contact closures on a switch. This allows you to

monitor changes such as:

• When a door or latch is open or closed

• When a container is full or empty

• When a switch or valve is open or closed

• The level of fuel in a vehicle (connected to an on/off sensor)

• When the trunk of a vehicle is opened or closed

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Velocity Edge GX440 User's Guide Page 253