Interlocking - Alstom

VPI ® / iVPI ToolsComputer Aided Application Programming Environment (CAAPE)InterlockingThe VPI ® / iVPI Computer-Aided Application ProgrammingEnvironment (CAAPE) is a comprehensive set of developmenttools for creating vital and non-vital applications. These toolsare integrated together within a development environmentfor easy access and include graphical application buildingutilities, compilers for VPI ® /iVPI vital and non-vitalapplications, vital Application Data Verifier (ADV) and aGraphical Simulator. It provides for graphical hardwareconfiguration, relay or ladder logic program definition andcommunication assignments. It also allows for the printingof the graphical relay circuits for final documentation. Thebuild utilities include a library editor to create and maintaincommonly used logic routines for easy reuse.CAAPE includes an Application Data Verifier (ADV), which isan inverse compiler that checks the hardware configurationsand interlocking logic as resident within memory devicesto be installed in VPI ® /iVPI field equipment, and verifiesthat the data matches the intended user input. It producesdocumentation that tracks and highlights differences inan interlocking following changes to interlocking logic orconfiguration, thereby reducing the retest cycle.The Graphical Simulator consists of tools to generate controland indication panels and simulators to exercise the vitaland non-vital logic. The logic equations and variables canbe viewed graphically with the corresponding states duringsimulation run-time. Multiple VPI ® /iVPI systems can besimulated simultaneously.©2011 Alstom Signaling Inc. www.alstomsignalingsolutions.com 51