Polling Engine and Protocol Drivers

It is often a challenge to connect your SCADA host to the controllers and this is because there are many vendors, protocols and communication options. ClearSCADA includes integrated drivers for industry standard protocols such as MODBUS, DNP3, IEC870 and OPC at no additional cost and has partnered with 3rd party vendors which are the market leaders for proprietary controllers found in Oil & Gas and PLCs.

Telemetry applications generally use open standards such as MODBUS, DNP3 and IEC870 because they are spread out over a wide area and are designed for intermittent communications which quite often occurs. ClearSCADA leverages the full potential of these protocols, including features such as synchronising RTU real-time clocks, uploading event data or data log files and backfilling this automatically into the ClearSCADA historian, providing communication statistics and alarms, etc.

When it comes to the factory floor or plant, the PLC dominates and there are many brands and communication options available. It used to be serial, then proprietary cabling, and more recently Ethernet, but protocols remains proprietary. ClearSCADA has an embedded Kepware OPC Server in the product that has drivers for all major PLC brands.

The Oil & Gas industry is also riddled with proprietary protocols and has the added complexity of EFM data from gas flow computers. ClearSCADA is integrated with Autosol’s AES Server and can access any of the points or parameters in these RTUs and flow computers.

Overview of supported PLCs/RTUs and devices

Copyright © 2011 Control Microsystems Inc. All rights reserved. |  Legal & Privacy Statement  |  Site Feedback  |  Newsletter Sign-Up  |  Contact Us