Description
Wall-Mounted Open Protocol High Level Interface
The VESDA Wall-Mounted Open Protocol High Level Interface (HLI) links your VESDAnet1 with PC software monitoring tools, Building Management Systems (BMSs) and Fire Alarm Control Panels (FACPs), otherwise known as ‘host’.
With a built-in VESDAnet interface you don’t need a remote VESDAnet socket module, which makes the Wall-mounted HLI a cost effective solution to your interface requirements.
There are two models available, depending on whether you require communication between your host and VESDAnet to be master-slave or peer-to-peer.
VHX-1300 Wall-Mounted Open Protocol HLI (peer-to-peer)
In the peer-to-peer model, the host polls the HLI for information about devices on VESDAnet, while the HLI sends unsolicited messages to the host. In this way, both the HLI and host are responsible for supervising the communications link between them. In the peer-to-peer model, the host can request and receive multiple messages from the HLI.
Click here for the VESDA VHX-1300 Metal Box HLI Peer to Peer Datasheet
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