SCADA System

Control Microsystems and Longwatch have collaborated to combine the former’s ClearSCADA system with the Longwatch Video Surveillance Platform and Video Historian Platform to capture security information for critical infrastructure and convey it to plant personnel. The video surveillance uses Modbus protocol and is event-driven, thus conserving bandwidth. The Longwatch system continuously captures and stores video locally, and only raises the alarm and transmits a video message when motion is detected, showing what happened before and after the event. Through a graphic display in ClearSCADA, operators are able to view what is occurring onsite, eliminating the need to send someone to investigate the alarm. The Longwatch video platform interfaces with ClearSCADA primarily via Object Linking and Embedding (OLE) for Process Control (OPC), with Longwatch acting as the OPC server and ClearSCADA the OPC client. Control Microsystems, Inc. (www.controlmicrosystems.com) and Longwatch, Inc. (www.longwatch.com)