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Physical Overview and Port Description
Figure 4-4
3
2
1
The following items are shown in
1
2
3
4
Cisco Physical Access Gateway User Guide
4-4
Cisco Input Module Ports and Connectors: Top View
Figure 4-3
Type
Description
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
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.
•
•
4
5
and
Figure
4-4:
Modules are connected using the CAN1 interface. The
CAN2 interface is not supported in this release.
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).
Chapter 4
Connecting a Cisco Input Module
6
OL-20932-01
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