1. E-ELT Local Control System Field Test on the VLT
R. Frahm

2. E-ELT Field Test on VLT VLT ANTU Enclosure Control System
500 I/O points
Control and Monitoring (=Alarms, LOGs)
E-ELT Target Technologies
DDS 4.4d (RTI)
PXI (National Instruments)
LabView/Windows 200x on PXI system (National Instruments)
IEEE-1588 Time Ref. System
OPC (UA), integrated into Labview, for communication with Siemens S7 PLC
PROFINET (Siemens)

3. E-ELT Field Test on VLT

4. E-ELT Field Test on VLT

5. E-ELT Field Test on VLT DDS DLL on PXI LCU/Windows XP
Uses RTI DDS 4.4d API
Visual Studio 2008 Professional
DLL integration into Labview: foreseen in Labview by default
Waiting for commands done via “Windows Events”
Restriction (for now): One command at a time
Version control SVN
AnkhSVN plugin for MS Visual Studio 2008
SVN on VLTSW 2010
Exclusive repository for E-ELT field test

6. E-ELT Field Test on VLT DDS Receiver on TCS WS
Uses RTI DDS 4.4d (for gcc <-> VLTSW2008: gcc 3.3.4)
DDS topics for
Commands
Replies
CCS log messages (FITS logs/FITS actions/FITS comments)
OLDB entries (one topic per database attribute, history depth = 1)
Configured for “reliable communication”: late-joining readers, ACK messages, heartbeat
Problem: Non-multithreaded CCS:
Main application (“Receiver”) needs to wait on POSIX message queue
DDS inserts elements into queue according to topics
Select() call of evH NOT performant enough:
One CCS application for receiving messages, DOES NOT handle CCS commands
One CCS application (WSF based) offering a single custom command: DDSCMD <command, parameters>