Answers to questions in agenda MVD-SC meeting of July 9 1999

(see talk L. Wiggers)

• Schematics:  see the PLC system and Temp System descriptions.
• rack and crate space required:both systems are located in the same rack.
• interlock set by PLC system, not by Temp  System: open=set_interlock=error
• Std's are made for PLC system and Temp System
• Variables are described for the PLC system and Temp system in the documentation described before. Error and Warning (Temp error/Cooling error) messages should produce yellow box. Update frequency of 5-10 s. Error will be generated as quick as 0.1 s after the event.
• Can messages are defined (see above)
• Histogramming of all variables that are sent; update frequency 5-10 s, storage of averaged value per 10-15 minutes.
• Configuration files are stored locally in the system, copies at the host are required to be able to check in case of errors in reading/writing.
• Logging of error messages is required, information to be kept for 10 days or so.
• No need of putting info in the data stream (no use in data-analysis).

Please mail suggestions/corrections/updates to Leo Wiggers (wiggers.nikhef.nl)