Connecting Dcs With Fire Alarm Control Panel Through Lpi-Modbus; Connecting Nri With The Fire Alarm Control Panel Through Lpi-Modbus - Honeywell X-618 Installation Manual

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N-6000

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NFS2-3030

Connecting DCS with Fire Alarm Control Panel through LPI-ModBus

LPI-ModBus(Loop Peripherals Interface) is a SLC-ModBus converter. X-618 is compatible with the

V2.0 and V3.0 version of the LPI-ModBus module. The Converter provides a communication link

between FAS and the third party system that use the modbus/RTU communication protocol. Each

module supports max 6 DCS, 48 zones. The module power will be provided by the fire alarm

control panel. Please refer <LPI-ModBus converter User's Manual > to get more detail.

LPI-ModBus is master, DCS is slave, and the slave address can be set in the Config software. It is

necessary that DCS, LPI-ModBus and FAS must be set respectively before working.

Figure 26 Schematic Diagram of Connecting DCS with Fire Alarm Control Panel through LPI-ModBus

If NRI is connected with the fire alarm control panel through the LPI-ModBus module, this

communication mode can achieve the fire alarm linkage between 32 DCS at most. In this

communication mode, NRI is master, LPI-ModBus module is slave; NRI supports up to 6 LPI-

ModBus module. The RS-485 interface of LPI-ModBus module will be linked with NRI's RS-485

interface (A1/B1) directly. If need to connect with multiple LPI-ModBus modules, RS-485 bus wiring

need to comply with the relevant standards, such as not star connection, ensure the

communication quality. The schematic diagram of connecting NRI with the fire alarm control panel

through LPI-ModBus module is shown as below.

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