Cisco Systems OL-20932-02 manual Cisco Input Module Ports and Connectors Top View

Chapter 4 Connecting a Cisco Input Module

Physical Overview and Port Description

Figure 4-4 Cisco Input Module Ports and Connectors: Top View

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Power

Two-pin connector for Voltage In (VIN) and Ground (GND) to connect a 12 to 24 VDC external power source.

CAN interface

A 3-wire CAN bus is used to connect additional modules.

Note Modules are connected using the CAN1 interface. The CAN2 interface is not supported in this release.

CAN Terminator

The CAN terminator switch is set to ON for the last device in a CAN wiring bus. This switch is set to set to OFF for all other devices in the CAN bus.

Input connections

Ten input interfaces used to sense the contact closure. Each input can be configured as supervised or unsupervised and can be configured to sense a Normally Open (NO) or Normally Closed (NC) contact.

•An unsupervised input senses a simple contact closure state, including Normal or Alarm. When connected to open contacts, the terminal voltage range is 4V to 5V. For closed contacts, the voltage range is 0V to 0.7V.

•A supervised input senses four contact states, including Normal, Alarm, Open and Short. These inputs require 1K End-Of-Line (EOL) termination resistors installed at the contacts (two resistors are included in the accessory kits for each Input port).

Cisco Physical Access Gateway User Guide

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