Author: Zimny, M.Z.
Paper Title Page
WEPGF094 A Modular Approach to Develop Standardized HVAC Control Systems with UNICOS CPC Framework 919
 
  • W. Booth, R. Barillère, M. Bes, E. Blanco Vinuela, B. Bradu, M. Quilichini, M.Z. Zimny
    CERN, Geneva, Switzerland
  
  At CERN there are cur­rently about 200 ven­ti­la­tion air han­dling units in pro­duc­tion, used in many dif­fer­ent ap­pli­ca­tions, in­clud­ing build­ing ven­ti­la­tion, pres­sur­iza­tion of safe rooms, smoke ex­trac­tion, pul­sion/ex­trac­tion of ex­per­i­men­tal areas (tun­nel, cav­ern, etc), and the ven­ti­la­tion of the com­put­ing cen­tre. The PLC ap­pli­ca­tions which op­er­ate these in­stal­la­tions are cur­rently being re­vamped to a new frame­work (UNI­COS CPC). This work began 3 years ago, and we are now in a po­si­tion to stan­dard­ize the de­vel­op­ment of these HVAC ap­pli­ca­tions, in order to re­duce the cost of ini­tial de­vel­op­ment (in­clud­ing spec­i­fi­ca­tion and cod­ing), test­ing, and long-term main­te­nance of the code. In this paper the var­i­ous im­prove­ments to the process with be dis­cussed, and ex­am­ples will be shown, which can thus help the com­mu­nity de­velop HVAC ap­pli­ca­tions. Im­prove­ments in­clude tem­plates for the "Func­tional Analy­sis" spec­i­fi­ca­tion doc­u­ment, stan­dard­ized HVAC de­vices and tem­plates for the PLC con­trol logic, and au­to­mat­i­cally gen­er­ated test doc­u­men­ta­tion, to help dur­ing the Fac­tory Ac­cep­tance Test (FAT) and Site Ac­cep­tance Test (SAT) processes.  
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THHD3O05 Standards-Based Open-Source PLC Diagnostics Monitoring 1151
 
  • B. Copy, H. Milcent, M.Z. Zimny
    CERN, Geneva, Switzerland
  
  PLCs are widely used to con­trol and mon­i­tor in­dus­trial processes at CERN. Since these PLCs ful­fill crit­i­cal func­tions, they must be placed under per­ma­nent mon­i­tor­ing. How­ever, due to their pro­pri­etary ar­chi­tec­ture, it is dif­fi­cult to both mon­i­tor the sta­tus of these PLCs using ven­dor-pro­vided soft­ware pack­ages and in­te­grate the re­sult­ing data with the CERN ac­cel­er­a­tor in­fra­struc­ture, which it­self re­lies on CERN-spe­cific pro­to­cols. This paper de­scribes the ar­chi­tec­ture of a stand-alone "PLC di­ag­nos­tics mon­i­tor­ing" Linux dae­mon which pro­vides live di­ag­nos­tics in­for­ma­tion through stan­dard means and pro­to­cols (file log­ging, CERN pro­to­cols, Java Mon­i­tor­ing Ex­ten­sions). This in­for­ma­tion is cur­rently con­sumed by the su­per­vi­sion soft­ware which is used by the standby ser­vice to mon­i­tor the sta­tus of crit­i­cal in­dus­trial ap­pli­ca­tions in the LHC and by the mon­i­tor­ing con­sole used by the LHC op­er­a­tors. Both ap­pli­ca­tions are in­ten­sively used to mon­i­tor and di­ag­nose crit­i­cal PLC hard­ware run­ning all over CERN.  
slides icon Slides THHD3O05 [1.057 MB]  
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