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Page last modified 15:35, 6 Mar 2013 by bernardo

Slow control

    Version as of 19:26, 19 Apr 2025

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    New ISTTOK slow control system

    Intro

    The new ISTTOK slow control system is designed to replace the former vaccum/power/slow timing system based is the EDWARDS controller

    Team and responsabilities

    • Horácio Fernandes (ISTTOK Leader)
    • Bernardo Carvalho (Project Leader)
    • Paulo Duarte (ISTTOK Session Leader, State Machine develpment)
    • Tiago Pereira (dsPIC development, RS232 protocol/ Sensor Interface/ Wiring)
    • Paulo F. Carvalho ( Epics Applications)
    • Bruno Santos (Epics)
    • Gonçalo Quintal (Epics, CSS Gui Panels)

    Hardware Platform

    Supervisor/Central Node

    One PC Controller

    • Intel(R) Atom(TM) CPU  330   @ 1.60GHz, Dual Core, 1 Gbyte RAM, 4 RAM
    • 4 Serial Ports
    • IP addr:192.168.1.152 ( ISTTOK private network)
    • Scientific Linux CERN 6 (SLC6) with MRG Realtime extensions
    • Kernel 3.2.33-rt50.66.el6rt.x86_64
    • NTP time conected to  IPFN Gps NTP/PPS server IP:10.136.236.255
    Local Control

    One or more dsPic board running an embedded firmware
    -

    Software Platform

    All software stored in IPFN SVN server: http://metis.ipfn.ist.utl.pt/svn/cdaq/ISTTOK/

    Central Node

    EPICS v. 3.14.12.3 with modules:

    Local Control

    Protocol for communication between dspics and PC in ISTTOK slow control

    • all bytes are readable ASCII
    • all messages all terminated with cr (\r or 13)

     

    The slow system control consists of:

    - Pfeiffer pressure gauges
    - one dsPic board running an embedded firmware
    - one high level PC application

     

    The dsPic acquires the pressure value from the Pfeiffer gauge, with the Pfeiffer protocol working on RS485, and sends the pressure to a high level PC application.

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