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fix calc link documentation

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zimoch
2025-05-23 13:48:54 +02:00
parent 226b752470
commit 8d46bd3a41
1 changed files with 4 additions and 4 deletions
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8
modules/database/src/std/link/links.dbd.pod
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@ -81,7 +81,7 @@ link(calc, lnkCalcIf)
=head3 Calculation Link C<"calc">
A calculation link is an input link that can evaluate mathematical expressions
on scalar (double-precision floating-point) values obtained from up to 12 child
on scalar (double-precision floating-point) values obtained from up to 21 child
input links, and returns a double-precision floating-point result. The
expression is evaluated by the EPICS Calc engine, and the result is returned as
the value of the link.
@ -95,7 +95,7 @@ record will be placed in C<LINK/MAJOR> alarm. If not and the C<minor> expression
evaluates to non-zero the record will be placed in C<LINK/MINOR> alarm state.
A calculation link can also be an output link, with the scalar output value
being converted to a double and provided to the expression as C<VAL>. Up to 12
being converted to a double and provided to the expression as C<VAL>. Up to 21
additional input links can also be read and provided to the expression as above.
The result of the calculation is forwarded to a child output link specified in
the link's C<out> parameter.
@ -127,7 +127,7 @@ An optional expression that returns non-zero to raise a minor alarm.
=item args
A JSON list of up to 12 input arguments for the expression, which are assigned
to the inputs C<A>, C<B>, C<C>, ... C<L>. Each input argument may be either a
to the inputs C<A>, C<B>, C<C>, ... C<U>. Each input argument may be either a
numeric literal or an embedded JSON link inside C<{}> braces. The same input
values are provided to the two alarm expressions as to the primary expression.
@ -149,7 +149,7 @@ result should be displayed. Equivalent to the C<PREC> field of a record.
=item time
An optional string containing a single upper or lower-case letter C<A> ... C<L>
An optional string containing a single upper or lower-case letter C<A> ... C<U>
which must correspond to an input provided in the C<args> parameter. When the
record containing such a link has C<TSEL> set to -2 (epicsTimeEventDeviceTime)
the record's timestamp field C<TIME> will be read from the indicated input link