1) All ATLAS standard racks and crates will be monitored. Helfrieds group will 
equip them with ELMBs and will be in charge of the readout into the PVSS system.
Should we decide to use non-standard crates (eg. different power supplies etc.), 
we will be free to use spare analog channels of the rack monitoring ELMBs to 
read out our own power supplies or whatever we like to.  

2) We will indeed require a Windows PC for the OPC server. Also a subdetector 
control station will be required. Both could be the same physical PC running 
Windows, if we are happy to locate our SCS where the CAN cable ends. It is not 
entirely excluded to use Helfrieds rack-control PCs if we have a sufficiently 
small-scale low-rate system. We need to discuss that issue with him.

3) While the CERN OPC server is tailored to the needs of the ELMB, it is in fact 
able to handle any CANopen message. This has already been shown to work with 
some industry standard CANopen compliant sensors.

4) If we intend to use a kind of bridge, as discussed in Birmingham, to connect 
either the Fujitsu to the ELMB or to run the ELMB with a 2nd CAN port, we are 
encouraged to discuss the details with Helfried (and also with the NIKHEF 
people)

I believe we should try and settle for either the 2nd CAN SAE81C91 (5-wire 
interface, schematics at 
http://edmsoraweb.cern.ch:8001/cedar-bin/file?cookie=1384080&document_id=348201&
version=1&filename=elmb128.1.pdf )

or the Fujitsu plus ELMB soon, so that I can discuss the chosen approach with 
Helfried.