Fritz, Neeti, Usha

1
PDT Monitoring Control

• Fritz, Neeti, Usha
• Fritz had to cancel. He will make a presentation
  on Monday.
• 3 Communications paths
• Direct connection
• 50-wide TnF cable
• 1553 bus lt---- concentrate on this
• Monitoring Control is presently carried out
  using Python applications applied over Epics and
  VxWorks running in d0olctl18(19)(34).
• Communications are made to the control dsp on the
  control board.

2
1553 Bus Progress

• There are thirteen 1553 busses. 10 are in
  operation. The other 2 dont have any front-ends
  as of now.
• Difficulty in maintaining stabilility
• Weak signals lead to implementing a hardware
  option on the control board
• Some control board failures can disable
  communications for every PDT on a bus (up to 9).

3
1553 Bus Scan Test
4
Monitoring Application

• PDT Interface (old picture) from Fritz
• displays the 4 LVPS levels, board temperature,
  differential gas pressure and something labeled
  status.
• ASCII file allows adding more PDTs.
• Not yet using this information to generate
  alarms.

5
Downloading

• PDTs have been ahead of other systems in
  downloading capability (until recently).
• Pre-run procedure sets up PDTs, loads channel
  enables, turns off pulsers, writes short
  multiblock including the module ID, and loads
  pipeline delay with a default pickle file
• Comics.py
• ComicsTalk.py
• set MUO.CMETP (for example)
• set MUO.CMETP.FE.231 (for example)
• quit
• Above procedure exposes some timeout errors in
  Epics control.

6
Downloading

• Sten and Herman have tested a control dsp program
  suitable for the larger multiblock (PDT 112) and
  loaded 3 others (032, 021, 124).
• Usha/Neeti are creating pickle files that include
  a more substantial multiblock, including
  chamber-dependent information.
• Going to the multiblock program on a widespread
  basis is best reserved for the two-week
  shutdown.
• Finally, the PDT download could be implemented in
  the .xml files we use to define the triggers.

7
Summary

• Some download and monitoring capability but
• Theres a long way to go.