IDNet 2 addressable device control

The 4007ES Hybrid provides an IDNet 2 addressable initiating device

signaling line circuit (SLC) that supervises wiring connections and

the individual device communications status on the SLC. With 2

wire IDNet 2 SLCs, initiation, monitoring, and control devices such as

manual fire alarm stations, TrueAlarm sensors, control relays, and

sprinkler waterflow switches can communicate their identity and

status and receive fire alarm system control. Additional addressable

interface modules include circuit isolators, conventional IDC zone

adapters, and interface to other system circuits such as fans,

dampers, and elevator controls.

IDNet 2 addressable device operation

Each addressable device on the IDNet 2 communication channel

is continuously interrogated for status condition such as: normal,

off-normal, alarm, supervisory, or trouble. Both Class B and

Class A operation is available. Sophisticated poll and response

communication techniques ensure supervision integrity and enables

T-tapping of the circuits for Class B operation. Devices with LEDs

pulse the LED to indicate receipt of a communications poll and can

be turned on steady from the panel. With addressable devices,

the location and status of the connected device is monitored,

logged, and displayed on the operator interface LCD. For precise

identification, each device has its own 40-character custom label.