flag2ad PV does not connect - 8idaSoft:flag2:cam1:Offset_RBV

[prjemian]

[W 2024-08-19 15:22:01,593 bluesky_queueserver.manager.profile_ops] Device 'flag2ad.cam': component 'offset' can not be processed: 8idaSoft:flag2:cam1:Offset_RBV could not connect within 1.0-second timeout.
ERROR:ophyd.objects:Subscription value callback exception (EpicsSignal(read_pv='8idaSoft:flag2:image1:ArrayData', name='flag2ad_image_array_data', parent='flag2ad_image', value=array([], dtype=uint8), timestamp=631152000.0, auto_monitor=False, string=False, write_pv='8idaSoft:flag2:image1:ArrayData', limits=False, put_complete=False))

Originally posted by @prjemian in #46 (comment)

[prjemian]

https://github.com/aps-8id-dys/bluesky/blob/f484822f13e42ef7f464a139c8d88b6cc8a245ef/src/instrument/devices/ad_common.py#L102

In [35]: from epics import caget

In [36]: caget("8idTetra:QUAD1:image1:Offset")
cannot connect to 8idTetra:QUAD1:image1:Offset

In [37]: caget("8idTetra:QUAD1:image1:offset")
cannot connect to 8idTetra:QUAD1:image1:offset

No such PVs 8idTetra:QUAD1:image1:Offset or 8idTetra:QUAD1:image1:Offset_RBV. This CamMixin needs:

offset = None

[prjemian]

Same thing for flag1ad. It's systematic.

In [42]: flag1ad.cam.offset
KeyError: 'offset'

During handling of the above exception, another exception occurred:
TimeoutError: 8idaSoft:flag1:cam1:Offset_RBV could not connect within 5.0-second timeout.