On 09/08, Ralph Lange wrote:
> Hi Lewis,
>
> Please remember that in EPICS context, record and PV are not the same.
>
> MyRecord.SCAN is a perfectly valid PV name, containing a dot.
Hi, Ralph!
Ah, I see! Yes, sorry about that! Thanks!
> Chapter 6.4.11 in your AppDevGuide describes the record instance, and
> correctly mentions the allowed characters for record names.
Hmm, in the guide on the EPICS website for 3.14.12 I think it's 6.14.2,
but yes, I do see what you're talking about:
record_name
The record name. This must be composed of the following characters:
a-z A-Z 0-9 _ - + : [ ] < > ;
And obviously there's no dot in that list. Thanks for that.
Back on legal characters for a PV name, is it true that a PV name can
have no more than one dot in it (i.e. the dot separating the record name
from the field name)?
If true, then a PV name cannot start with a dot since that would mean a
zero-length record name which is illegal, right?
What about ending with a dot--can a PV name end with a dot? Is that
interpreted as an empty field which defaults to VAL, or is a trailing
dot illegal?
Would a developer be open to a patch from me to the documentation to
further clarify the statement about legal PV name characters in section
6.3.2, Unquoted Strings, in light of the above questions?
Thanks,
Lewis
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- RE: Autosave ignores PVs starting with some characters Mooney, Tim M.
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