Section 7 - 2-Wire Polling Loop Expansion; Polling Loop Overview; Common Characteristics Of Polling Loop Zones - ADEMCO VISTA-32FB Installation And Setup Manual

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In This Section

Polling Loop Overview

Common Characteristics of Polling Loop Zones

Wiring/Addressing RPM Devices
Polling Loop Supervision
Programming Polling Loop Zones
Checkout Procedure for Polling Loop Zones
Compatible Polling Loop Devices
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Polling Loop Overview
The system can be expanded from the basic 8 zones to up to 32 zones using the built-in 2-
wire polling loop. Each device that is connected to the polling loop has the capability to
communicate with the panel about its status. These devices are called RPMs (Remote Point
Modules). The polling loop provides both power and data to the RPM zones, and is
constantly monitoring the status of all zones enabled on the loop. The maximum current
draw of all devices on the polling loop cannot total more than 128mA (unless using a 4297
Polling Loop Extender Module).
Refer to the list of compatible devices at the end of this section.
Common Characteristics of Polling Loop Zones
Polling loop zones have the following characteristics:
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Must use RPM (Remote Point Module) devices.
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Supervised by control panel.
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Can be individually assigned to either of two partitions.
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Can be individually assigned to bell outputs and/or auxiliary relay.
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Polling loop smoke detector LED will latch on the first detector to go into alarm. Clearing
alarm memory clears the latched LED.
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Polling loop smoke detector LED periodically flashes to indicate communication with the
control.
2-Wire Polling Loop Expansion
S E C T I O N
(Zones 009 - 032)
7
7–1