Vesda VHX-0310 PC Link HLI Open Protocol Master / Slave

Vesda VHX-0310 PC Link HLI Open Protocol Master / Slave

The VESDA 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’. There are two models available, depending on whether you require communication between your host and VESDAnet to be master-slave or peer-topeer.

VHX-0310 Open Protocol HLI (Master-Slave)

In the master-slave model, the host supervises the communications link between itself and the HLI (slave) by regularly polling the HLI to determine whether there has been  a change in the status of a detector on VESDAnet. In response to polling by the host, the HLI generates a single response which is sent back to the host. In this way, no unsolicited messages are sent from the HLI to the host. Depending on the polling strategy adopted, the Master/Slave Open Protocol HLI is able to report any and all fire alarms within a few seconds of a detector going into alarm.  Exact performance is dependent on the polling strategy adopted.

Information Available Using the Open Protocol HLI

• Detector Type (VLC, VLS, VLP, VLF)
• Support Mimic Mode: VLP/VLC/VLS
• Alarm status (Alert, Action, Fire1 & Fire2)
• Fault Status (System, Zone, Urgent, Power, Network, Flow, Filter)
• Status (Isolated, Normalizing, AutoLearn, Scanning)
• Display info (Alarm thresholds, Location name)
• Display update (Smoke level, Alarm & Fault status)
• Fault details (list of active fault codes)
• Fault strings (ASCII strings to describe each fault code)
• Detector controls (Reset, Isolate, Silence, Test, Scan or Normalize2)
• Configuration of Day / Night alarm thresholds

Key Features:

• Direct access and monitoring of your VESDAnet system
• Seamless data transfer
• Easily configured using Xtralis configuring and monitoring software package