Linkage

Linkage

Connecting system

components

• Allows configuring automatic actions• Triggering outputs based on specific inputs• Used for removing human reliance• Also used as backup to normal operations

BASIC CONCEPTS

Local Linkage (Self Contained)Internal Variable Linkage (Controller Based)Reaction Linkage (Global – System Wide)

LINKAGE TYPES

• Reader Alarms to Auxiliary Relays• Alarm Panel Inputs to Output relays

• Only Control Outputs from same device• Limited Configuration Options• Only power to Device Required• Very Useful for Redundant Backup• Extremely Fast Reacting• Removes Reliance on Human Operators

LOCAL LINKAGE

Local Linkage - ExampleAlarm Input Sensor Device

changes input state to ‘Alarm’

Linkage action is internal to the

device, no outside action

Output changes state in reaction to alarm input

Local Linkage Programming

• Configured in Software, stored in Controller

• Can affect any device on controller• Inputs from one device can control another

• PC’s or network not needed• Very fast acting• Removes requirement for extra wiring• Also useful for redundant backups• Removes Reliance on Human Operators

INTERNAL VARIABLES - GENERAL

• Alarm Panel Relays• Reader Auxiliary Relays• Masking Individual Alarms• Masking Alarm Groups• Unlocking Doors• Time Zone Activation• Testing Active Alarms Before

Masking• Can be Long List of Many Functions

INTERNAL VARIABLES - WHAT

• Alarm Panel Inputs• Reader Alarms• Reader Auxiliary Inputs• Access Grant• Access Deny• Duress• Can Count Access

Grants• APB Area Counts

INTERNAL VARIABLES - WHEN

Internal Variable- Example

Alarm Input

Change is detected in

controller, signal is sent to devices to

change state

Sensor Device changes input

state to ‘Alarm’

Devices change mode to OPEN on

designated readers

Internal Variable - Configuration

• Configured in Software, stored in PC’s• Can affect any device on System• Inputs from one device can control any

other

• PC’s must be Functioning• Requires APACS PRO software• Uses Network to send info to other PC’s• Removes Reliance on Human Operators

REACTIONS - GENERAL

• Alarm Panel and Reader Relays• Wave File Sounds• Live Video and Video Verification• CCTV Control (Camera Selection,

etc.)• Changing Reader Modes• Paging Systems• External Program (Word, Email, etc.)• Time Delays (Pause)• Can Be Long List of Many Functions

REACTIONS - WHAT

• Menu Selection and Hot Keys• Graphic Map Buttons• Event Message Masks• Access Grants from Specific

Cards• Any Type of Alarm Input• Trigger only During Certain

Times• Configure Menus for Operator

Selection

REACTIONS - WHEN

Reaction - Example

Sensor Device changes input

state to ‘Alarm’

Alarm Input

Controller detects change, sends

message to Alarm Mode station

Alarm Mode Station receives

message and reaction is executed

Sensor Device changes input

state to ‘Alarm’

-Email is sent -Popup message

displayed to guard

Reaction - Configuration

What about…?• What is the best solution for the

following?

– Open all doors in response to an input from PAGA (Public Address & General Alarm) system?

– Turn on lighting?

– Notify the security director when perimeter alarms are detected after midnight?

– Sound an alarm when a gas alarm is pulled?