Vesda VHX-1400 Metal Box HLI Modbus Type 1

Description

Vesda VHX-1400 Metal Box HLI Modbus Type 1

The VESDA Wall-mounted ModBus High Level Interface (HLI) links your VESDAnet with PC software monitoring tools, Building Management Systems (BMSs) or Fire Alarm Control Panels (FACPs), otherwise known as `host’, that support the ModBus protocol. There are two models available:

Wall-mounted ModBus HLI Type 1 (VHX-1400) which echoes each character received on the RS232 link back to the host together with reply message.

Wall-mounted ModBus HLI Type 2 (VHX-1410) which has the echoing function disabled.

One ModBus HLI is used to interface to a VESDAnet. Modbus HLI supports up to a maximum of 40 VESDA detectors on a VESDAnet.The Modbus HLI supports VESDAnet detector zone numbers between 1 to 200. The Modbus HLI divides up the address range into to 7 logical networks. For example, the first 30 addresses are considered in network 1, addresses between 31 to 60 are in network 2 and so on.