Sierra Wireless MP 880W manual Connector pinouts, Digital input devices, Port specifications

MP880W Modem User Guide

Note: No more than 36 VDC should be applied to any I/O pins.

Before using the digital input/output lines, you must configure them as inputs or outputs.

Connector pinouts

The MP modem’s I/O port is a female DB15HD connector with eight active I/O pins:

•Two (2) digital I/O pins.

•Two (2) digital input pins.

•Four (4) analog input pins.

There are also six reserved pins and one ground pin.

15

610

1115

DB15HD male cable

DB15HD female connector on rear of MP modem

1.Reserved—do not connect

2.Reserved—do not connect

3.Digital Input/Output 1

4.Digital Input 3

5.Reserved—do not connect

6.Reserved—do not connect

7.Analog Input 2

8.Analog Input 4

9.Reserved—do not connect

10.Ground (GND)

11.Digital Input/Output 2

12.Digital Input 4

13.Reserved—do not connect

14.Analog Input 1

15.Analog Input 3

Figure 6-1: Pinouts for a male DB15HD I/O cable (left) that connects to the MP modem’s female DB15HD I/O connector (right). Note that the two figures’ pinouts are mirror images of each other, since they plug into one another.

Port specifications

See “I/O port characteristics” on page 75 for the technical specifications of the I/O ports, including input voltages.

Digital input devices

Digital input devices are those that have only two states and send a signal to the MP modem in one of those states. An example of a digital input device might be a gun rack alarm that sends a signal to the MP modem any time the gun rack is open. Another example would be a panic button that sends a signal to the MP modem when it is pushed.

58 2130795