Instrument Control Systems Seminar 2014, 20 th -24 th October 2014 New Standards VLT Control System Mario Kiekebusch (On behalf everyone who took part on this work)

Instrument Control System Seminar, 20 th -24 th October 2014 Outlook  Motivation  International Standards  New Development Platform  Integration into the VLT Control System

Instrument Control System Seminar, 20 th -24 th October 2014  More than 15 years of operations.  Finalizing second generation VLT/VLTI instruments, upcoming a third generation.  Architecture based on Linux WS and VME based Local Control Units. Motivation VLT Control System

Instrument Control System Seminar, 20 th -24 th October 2014  Technology is advancing fast and obsolescence is becoming an issue.  Custom solutions (hardware and software) are too expensive to maintain.  Many of the old problems are now solved by COTS.  We need to build an evolution path from VLT to E-ELT. Why do we need new standards? Motivation

Instrument Control System Seminar, 20 th -24 th October 2014  EtherCAT/Profinet (fieldbuses)  GigE Vision & GenICam (camera interface)  IEEE1588 (time protocol)  OPC-Unified Architecture (communication protocol)  IEC (programming)  PLCOpen MC (motion control) International Standards

Instrument Control System Seminar, 20 th -24 th October 2014 EtherCAT & Profinet (fieldbuses) International Standards  One the most important and well supported Ethernet based fieldbuses today in industry.  They work with standard Ethernet hardware.  Great variety of available products.  Low cost and deterministic.

Instrument Control System Seminar, 20 th -24 th October 2014 GigE Vision / GenICam (camera interface) International Standards  Interface hardware standard and generic software interface.  It allows fast image transfer using gigabit ethernet.  Evaluated for 3G TCCDs.

Instrument Control System Seminar, 20 th -24 th October 2014  The IEEE1588 standard or known as well as Precision Time Protocol (PTP) is used to synchronize clocks throughout a computer network (ethernet based)  The E-ELT synchronization system.  VLT time system modified to support this new protocol. International Standards IEEE1588 (time synchronization)

Instrument Control System Seminar, 20 th -24 th October 2014  Cross-platform protocol to communicate to PLC control units.  Client/Server architecture.  Concept of address space where server keeps all PLC variables exposed to the OPC clients.  Services: Read/Write, Subscribe, Alarms &Events. International Standards OPC-Unified Architecture (communication protocol)

Instrument Control System Seminar, 20 th -24 th October 2014 IEC (programming standard) International Standards  IEC standard for Programmable Controllers (PLCs)  It describes common elements: data type, variables and software model.  It define a list of graphical and textual programming languages.

Instrument Control System Seminar, 20 th -24 th October 2014  PLCopen MC offers standard, open motion control function blocks based on the IEC languages to create efficient, flexible code that is vendor- and product-independent. International Standards PLCOpen Motion Control (MC)

Instrument Control System Seminar, 20 th -24 th October 2014  Programmable Logical Controllers (PLCs)  Beckhoff Embedded PC family for Instrument Control.  Siemens S7 family for cryogenics and safety system applications. New Development Platform

Instrument Control System Seminar, 20 th -24 th October 2014  2009 – Started implementation of Fieldbus (FB) Extension.  2010 – FB Extension software validated in Paranal with PIONIER instrument.  2011 – First official version of FB Extension software.  2011 – Evaluations to investigate more complex motion control and time synchronization functionalities.  2012 – Technical board to evaluate PLCs as the new ESO development standard.  2012 – ESO instrument projects started using PLCs for auxiliary functions (cabinet temperature control, cryogenic control).  2013 – ESO accepted proposal from the ESPRESSO consortium to use PLCs the replacement of VME-based LCUs for their instrument control sytem. ERIS drafted control system based on PLCs.  2014 – Further development of PLC solutions in the scope of the technology development programme.  2014 – ESO Standardization board approved this technology as new ESO standard. New Development Platform Standarization Roadmap

Instrument Control System Seminar, 20 th -24 th October 2014  It uses EtherCAT.  It supports IEEE1588.  It implements PLCOpen Standards.  It enable High-level Programming Languages.  Multi-core Support.  Interoperability. New Development Plataform Beckhoff Embedded PCs

Instrument Control System Seminar, 20 th -24 th October 2014 New Development Platform TwinCAT Software  TwinCAT 3 – eXtended Automation Engineering (XAE)  Used to configure, develop and download the PLC applications.  Running embedded in MS Visual Studio  Supports SVN Integration (AnkhSVN)  TwinCAT 3 – eXtended Automation Runtime (XAR)  It offers a realtime environment available in which the TwinCAT 3 modules can run.

Instrument Control System Seminar, 20 th -24 th October 2014 New Development Platform TwinCAT Software: XAE User Interfaces

Instrument Control System Seminar, 20 th -24 th October 2014 New Development Platform TwinCAT Software: eXtended Automation Runtime (XAR)  Modular Design  Flexible  Scalable  Support 32/64bit OS  Support multi-core architecture  Support multi-tasking  preemptive multi-tasking  parallel processing of tasks  Minimum cycle time: 50µs

Instrument Control System Seminar, 20 th -24 th October 2014 Present  PLC replaces the LCU.  EtherCAT replaces VME local bus. Future Integration to the VLT Control System Hardware Architecture

Instrument Control System Seminar, 20 th -24 th October 2014 (OPC-UA) PresentFuture Integration to the VLT Control System Software Architecture – WS Part

Instrument Control System Seminar, 20 th -24 th October 2014  FB_LAMP  FB_SHUTTER  FB_IODEV  FB_DROT  FB_ADC  FB_TIMER  FB_MOTOR_CONTROL  FB_LAKESHORE Integration to the VLT Control System Function BlocksLibraries Software Architecture – PLC Part

Instrument Control System Seminar, 20 th -24 th October 2014 Integration to the VLT Control System Function Block Information Configuration Control Status Software Architecture – PLC Part  Generic FB Composition  Data structures exported to OPCUA

Instrument Control System Seminar, 20 th -24 th October 2014 VLT Control System PLC Variables OPCUA Address Space

Instrument Control System Seminar, 20 th -24 th October 2014 ic0 WS Server OPC UA Server Controller Mapping IWS ic0 Extension OPC UA Client IC0FB Control OPC UA Ethernet PLC (replacement of LCU) OPC UA Server Controller Mapping IWS Business Logic OPC UA Client Device Server Windows RT Kernel ADS Integration to the VLT Control System Software Architecture – Communication Interface

Instrument Control System Seminar, 20 th -24 th October 2014 Status  Are we finished ? No, we are still working.  When are we going to be ready ? We plan to finish at the end of this year.  Is this the only solution for the future ? No, it is conceived for low-medium performance applications.

Instrument Control System Seminar, 20 th -24 th October 2014 Conclusions  PLCs and associated standards are the new platform for developing future instrument control systems.  VLT Instrumentation SW has been already adapted to this new platform.  The technology was validated at the observatory by PIONIER instrument.  Further functionality (if needed) will be implemented on demands of future projects.

Instrument Control System Seminar, 20 th -24 th October 2014