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Introduction & Specifications
Contact Sense Applications
The SpectraComm ADT rear panel DB-25 interface can make up to eight connections for
environmental inputs and can be configured for alarm notification whenever a change occurs in the
state of dry contacts at external devices at customer sites. In addition, any unused SC-ADT front
panel port can also be configured for contact inputs, supporting Sense Mode and Range Mode (Hi/
Low) contact sensing. When the SC-ADT detects a contact change from the normal state, it declares
an "active" alarm and a "clear" trap is sent when the contact returns to the normal state. The alarm
notification is user-configured as follows: after sensing a change from the normal state (open or
closed), an alarm trap is sent to a management station using an SNMP alarm trap.
The rear panel DB25 connector of the SC-ADT can also support up to two control outputs to
external devices at the local site. These contacts are internal relays that allow the user to create an
open or closed circuit that applies a specific operational state at the external device.
Figure 1-5
shows the SC-ADT performing a contact sensing application that tracks temperature and
entry sensors at a remote location, with SNMP Traps sent to a Management Station. A contact
transport message (future option) is shown being sent to another SC-ADT site.
Note
An SC-ADT is not needed to receive traps. Any Management Station in the network can be a trap destination.
MANAGEMENT
STATION
IP
NETWORK
REMOTE OFFICE 'A'
(Future Application)
General
DataComm
. . .
OUTPUT
PWR CYCLE
Figure 1-5
Future Options
•
(Future option) With Contact State Transport, after sensing a relay state change, a message is
sent to a remote SC-ADT device to open or close a relay at that site.
•
(Future option) With Trap and Transport, the Alarm is transported between sites, and a Trap
is sent to a management station. (Destinations for alarm transport and Trap are independent.)
•
(Future option) In any contact transport application, SC-ADT devices are required at both sites
to transport contacts, whereas only a single unit is required to provide the alarm trap.
076R172-000
Issue 6
Contact
Name
contact1
contact2
contact3
contact4
contact5
contact6
ALARM
contact7
contact8
TRAP
contact1
contact2
contact3
contact4
contact5
contact6
contact7
contact8
OUTPUT
CONTACT
FANS ON
ACTIONS
Contact Sensing with Contact Alarms (Contact Transport shown as future option)
SpectraComm ADT
Installation and Operation Manual
SC-ADT Applications Overview
Contact Status
Alarm Status
Admin
Normal
Current
Alarm
at the SC-SDT CLI Interface
State
State
State
Status
ON
NC
Open
Active
ON
NC
Closed
Clear
ON
NO
Open
Clear
ON
NO
Closed
Active
ON
NO
Open
Clear
OFF
ON
NO
Open
Clear
ON
NO
Open
Clear
Contact Descriptions
Door 1 Open
SNMP Trap Watcher
Door 2 Open
Smoke Detection
File
Edit
Settings
Motion Detection
Time
Date
Source
Temperature High
E
09:43:28
05/22/2003
172.160.5.12
Power Fluctuation
09:43:05
05/22/2003
172.160.5.12
G
Battery Backup Engaged
G
08:11:53
05/22/2003
172.160.5.12
i
05:36:10
05/22/2003
172.160.5.12
CONTACT
TRANSPORT
(Future Option)
General
DataComm
INPUT
Door
Alarm
Alarm Status
at the SNMP Controller
Description
contact1 "Door Open" ACTIVE (GMT13:3957 5/22/2003)
contact4 "Motion Detection" ACTIVE (GMT13:3957 5/22/2003)
Link Up
Local Trap Watcher Listening on UDP port 162
09:43:50
REMOTE OFFICE 'B'
ALARM
TRAP
. . .
INPUT
INPUT
Smoke Detection
Temperature High
Alarm
Alarm
1-11
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