XCell Data Concentrator
To make full use of Network Gold the XCell Intelligent RTU Integrates and concentrates system data in a form suitable for use by virtually every PLC or DCS system. For example the XCell has an implementation of Modbus RTU Slave protocol which has considerable proven field service. Modbus itself enables P&B Protection & Control Relays to successfully communicate with the vast the majority of PLC & DCS systems such as Honeywell, Allen Bradley, ABB, Foxboro, Fisher Rosemount, etc.

Integrating the System
The XCell is modular, with a maximum of 6 data highways and 192 Protection and Control Relays and can be distributed over a distance of up to 1.5km. This system does not have to be contained in a single location but can be distributed over a distance of 1.5km using it's redundant high speed network.

Data Concentration - Minimum Fit - Minimum Cost
The XCell Intelligent RTU has been developed by P&B as the Data Concentrator and means of Integrating all of our Intelligent products. The P&B protocol has been designed to take full advantage of the XCell's modular capability.

Because the XCell is a modular system only the required amount of Serial Ports need be installed and as such no redundant costly hardware is needed.

The XCell system has been designed to be installed without the need for any complex configuration software. This extends to additions to plant as further units can be installed on-line and will automatically be sensed by the existing network.

Redundant Systems
The XCell system having an Intelligent network between the units has one of the most advanced dual redundant systems available today. In the event of part of the communications network failing, full data and control is maintained with bumpless transfer, this even extends to cover for single breaks along the data highway.

Distributed Systems
Being able to distribute the XCell over a large geographical area, such as an oil refinery removes a major area of system vulnerability where the whole process is often dependant on one centralised interface unit.

An additional and major benefit of distributing the
system is that each part of it can be fully tested and commissioned at the manufacturers works prior to
reaching the site.

With most systems a great deal of time has to be spent at site to before a complete working system is achieved. Our distributed system means that MCC's can be installed and commissioned and put into full service one at a time with virtually no system interruption when the next MCC is brought on line.