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The XPM may be configured to insert event codes 272-287 into the timing stream.  Four event codes are generated by each sequence engine within the XPM.  The XPM has 4 sequence engines allowing 16 event codes total.

A current example for doing this is done by executing:

(ps-4.5.24) bash-4.2$ python psdaq/psdaq/seq/seqprogram.py -h
usage: seqprogram.py [-h] --pv PV --seq SEQ [SEQ ...] [--start] [--verbose]

sequence pva programming

optional arguments:
  -h, --help           show this help message and exit
  --pv PV              sequence engine pv; e.g. DAQ:NEH:XPM:0
  --seq SEQ [SEQ ...]  sequence engine:script pairs; e.g. 0:train.py
  --start              start the sequences
  --verbose            verbose output

(ps-4.5.24) bash-4.2$ python psdaq/psdaq/seq/seqprogram.py --seq 04:psdaq/psdaq/seq/33k_35k.py --pv DAQ:NEH:XPM:2

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