EPICS-DIM Interface Peter Zumbruch Experiment control systems group GSI (KS/EE)

December 6, 2009EPICS - DIM Interface - Peter Zumbruch - GSI EPICS DIM Interface EPICS DIM Interface Implementation as device support module Running –DIM SERVER Providing read/write access to EPICS variables –DIM CLIENT Interfacing DIM services and commands for single variables to EPICS process variables –Successfully used for 5 weeks continous HADES beam time On demand –String transport mode (DIM provides strings converted by the Interface to single data types, easier to handle by EPICS) –Array and structures support –More EPICS records DIM (protocol) DIM (protocol) EPICS EPICS- DIM Interface Client Server Device

December 6, 2009EPICS - DIM Interface - Peter Zumbruch - GSI Embedded EPICS on ETRAX install embedded Linux on ETRAX chip CPU (axis.com) based front-end systems 2 step approach: 1.Install DIM on ETRAX and use EPICS-DIM Interface to communicate via network with external EPICS clients or IOCs Suitable for development: –DIM protocol also accessible via other controls software, i.e. LabVIEW, or CS, etc. –But locally no (EPICS) logic (database, (fast) sequencing, alarming) provided 2.Install EPICS Embedded on ETRAX Provides all features of EPICS Local fast EPICS based logic, network independent By turning the direction of the interface users may still see a DIM device, mimicked by EPICS using the EPICS – DIM interface CS

December 6, 2009EPICS - DIM Interface - Peter Zumbruch - GSI Download Contact: WWW - Mail - epics_at_gsi.deepics_at_gsi.de (p.zumbruch_at_gsi.de)

December 6, 2009EPICS - DIM Interface - Peter Zumbruch - GSI Record database Example general purpose record record($(record), "$(user):$(pvName)") { field(DESC, "caDIMInterface_$(record)") field(DTYP, "caDIMInterface") field($(INPOUT), "$(Type)$(serviceName)$(serviceFormat)$(commandName)$(commandFor mat)$(dnsAddress)$(dnsPort)$(scanMode)$(scanInterval)$(serverName)$( defaultGet)$(defaultPut)$(any)") field(VAL, "$(value)") field(SCAN, "$(scanPeriod)") … field(PREC, "$(precision)") }

December 6, 2009EPICS - DIM Interface - Peter Zumbruch - GSI Startup command file Example startup file: #!../../bin/linux-x86/caDIMInterface < envPaths cd ${TOP} ## Register all support components dbLoadDatabase("dbd/caDIMInterface.dbd") caDIMInterface_registerRecordDeviceDriver(pdbbase) ## Load record instances dbLoadRecords("db/dbDIMInterface.db", "any=, record=ai, INPOUT=INP, user=$(USER), pvName=DoubleValClient, value=100, commandName=, commandFormat=, serverName=, dnsAddress=, dnsPort=, defaultPut=, defaultGet=, scanMode=, scanInterval=, scanPeriod=Passive, precision=2") dbLoadRecords("db/dbDIMInterface.db", "any=, record=ai, INPOUT=INP, user=$(USER), pvName=IntValClient, value=0, commandName=, commandFormat=, serverName=, dnsAddress=, dnsPort=, defaultPut=, defaultGet=, scanMode=, scanInterval=, scanPeriod=Passive, precision=0") dbLoadRecords("db/dbDIMInterface.db", "any=, record=ai, INPOUT=INP, user=$(USER), pvName=KillTestServer, value=0, serviceName=, serviceFormat=, serverName=, dnsAddress=, dnsPort=, defaultPut=, defaultGet=, scanMode=, scanInterval=, scanPeriod=Passive, precision=2") dbLoadRecords("db/dbDIMInterface.db", "any=, record=ao, INPOUT=OUT, user=$(USER), pvName=ServerAo, value=10, serviceName=, serviceFormat=, commandName=, commandFormat=, serverName=, dnsAddress=, dnsPort=, defaultPut=, defaultGet=, scanMode=, scanInterval=, scanPeriod=Passive, precision=2") cd ${TOP}/iocBoot/${IOC} iocInit()