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https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA155
Title PLC Integration in EPICS Environment: Comparison Between OPC Server and Direct Driver Solutions
Authors
  • L. Antoniazzi, A. Baldo, M.G. Giacchini, M. Montis
    INFN/LNL, Legnaro (PD), Italy
Abstract In the IFMIF EVEDA project*, INFN-LNL Laboratory has been involved in the design and construction of a normal conducting Radio Frequency Quadrupole (RFQ) used to bunch and accelerate a 130 mA steady beam to 5 MeV. The EPICS based control system** has been entirely developed in house using different hardware solutions: PLC for tasks where security is the most critical feature, VME system where the acquisition speed rate is crucial, common hardware when only integration is required without any particular feature in terms of security. Integration of PLCs into EPICS environment was originally accomplished through OPC DA server*** hosted by a Windows embedded industrial PC. Due to the issues analyzed in injector LCS, LNL proposed to migrate to the usage of EPICS Direct Driver solution based on s7plc****. The driver itself is suitable for direct communication between EPICS and PLCs, but it doesn't take care of data update and synchronization in case of communication failure. As consequence LNL team designed a dedicated method based on state machine to manage and verify data integrity between the two environments, also in case of connection lost or failure.
Footnotes & References * httpd://www.ifmif.org
** http://www.aps.anl.gov/epics/
*** www.opcfoundation.org
**** http://Epics.web.psi.ch/software/s7plc/
Paper download THPHA155.PDF [0.650 MB / 4 pages]
Poster download THPHA155_POSTER.PDF [2.894 MB]
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Conference ICALEPCS2017, Barcelona, Spain
Series International Conference on Accelerator and Large Experimental Control Systems (16th)
Proceedings Link to full ICALEPCS2017 Proccedings
Session Poster Session
Date 12-Oct-17   16:45–19:00
Main Classification Software Technology Evolution
Keywords ion, PLC, EPICS, controls, rfq
Publisher JACoW, Geneva, Switzerland
Editors Volker RW Schaa (GSI, Darmstadt, Germany); Isidre Costa (ALBA-CELLS, Cerdanyola del Vallès, Spain); David Fernández (ALBA-CELLS, Cerdanyola del Vallès, Spain); Óscar Matilla (ALBA-CELLS, Cerdanyola del Vallès, Spain)
ISBN 978-3-95450-193-9
Published January 2018
Copyright
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