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LET Group

Unit F1, Grafton Way



RG22 6HY


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Network - Overview


Any combination of Fire Control Panels, Supernet Controllers and Multiplexers can be networked together to provide a large scale network of safety systems. The Supernet Network can also be used as a stand-alone Data Collection and Control System when the Supernet Controller is used together with the Supernet Multiplexer units. Two multiplexers can also be connected directly together to provide a simple point to point data multiplexing solution. The Supernet Digital Personal Safety System also utilises this technology. The network is supported by the Supernet Graphics System, which is a PC based software package for total site wide monitoring and control of fire systems and plant I/O.

Supernet Network

The Supernet Data Collection and Control System has been developed to monitor and control multi plant I/O for a wide range of Fire & Safety Applications. Literally thousands of remote alarm and monitoring signals such as fire, security, plant and BMS can be easily and securely transmitted to a central control point via a single data loop cable. The System consists of two main components, Controllers & Multiplexers. Multiplexers can either be 16 or 32 channels and provide the hardware interface to the plant signals. Up to 32 Multiplexers can be connected to a Controller via a serial data loop, providing significant cost savings over discrete wiring. The Supernet Controller is a local control and display unit for all of the signals connected to the Multiplexers. A comprehensive set of features provide the functions of intelligent Fire and Security panels. Each Controller can be networked to other Controllers and Firequest Fire Alarm Panels, via the Supernet Peer-to-Peer Network.





The Supernet Data Collection and Control System has been developed to meet a diverse range of alarm and I/O monitoring applications. Built in logic functions including AND, OR and Co-incidence and programmable timers, provide a high degree of flexibility. The System is ideal for monitoring signals in shopping centres with multiple tenancy, large multi-storey commercial premises, industrial sites, schools and hospitals. Through fully monitored data cabling, the secure monitoring and control of fire, security, plant and BMS signals is assured. For fire applications Supernet can operate with all network loop data being carried on Fire Cable, without compromising on data throughput. This maintains the integrity of the fire signals and meets the requirements of BS5839. The Supernet Data Collection and Control System has a modular and flexible design which allows it be used as a replacement for many existing obsolete I/O monitoring systems. Supernet simply replaces any existing hardware, and in many cases will utilise existing cabling. For simple data multiplexing applications, two Supernet Multiplexers can be connected together as a point to point data concentrator, allowing up to 32 signals to be transmitted from one place to another using one pair of wires, and without the need for a Supernet Controller.


To allow for future expansion or larger system requirements, Supernet Controllers can be connected together using the Supernet Peer-to-Peer Network. Any of the Firequest Fire Alarm Control Panels can be connected to the same network. Up to 32 Supernet Controllers can be connected to the Network, each up to 2 km apart, providing an interface for up to 32,000 signals. The Supernet Network can be expanded further to include PC Graphics Displays and Mimic panels.

Installation and Commissioning

Installing and commissioning the Supernet System is simple, having been designed to keep on site time to a minimum. Off-line configuration of the system is achieved remotely using a PC Configuration program. This allows the configuration of all functions including the I/O points, their 40 character messages and any logic functions. The configuration data can then be downloaded into the panel when on site. Once on site, the system configuration can be updated via the PC, with the functions password protected to prevent unauthorised access.