Main Control Room Schematic View Typical for Steam Turbine Driven Trains Plant DCS (Distributed Control System) Redundant Modbus Hardwired signals Compressor Train Control Panel - SIEMENS Field Rack Room / Safe Area Profibus-DP optical Link Profibus-DP Simatic MP 277 Visualisation Redundant PLC Simatic S7-400FH Redundant Modbus Redundant Profibus-DP Common alarms,trips - hardwired I/O cards Simatic ET200 Steam Turbine Trip Machine Monitoring System e.g. vibration Field Steam Turbine Overspeed protection BRAUN E16 Field I/O Signals Speed probes I/S Barriers Steam turbine Comp. © Siemens AG 2007. All rights reserved.