Hello,
Mario:
> > point L "light"
Chaser 4
> > point_alias L1 "light 1" L
0
> > point_alias L2 "light 2" L
1
> > point_alias L3 "light 3" L
2
> > point_alias L4 "light 4" L
3
takeshi ikeya:
> Is L0 magic_bit?
No; it's a manually-declared alias.
> If so, don't we need period ? ..like L.0
Any name can be used for the manually-declared aliases; it
doesn't even need
to contain the "L".
The magic_bit_aliases setting simply creates automagic
aliases for all points.
> Can I write codes like ..handle =
plc_point_by_name(L); ?
Don't forget the quotes around the names:
plc_point_by_name("L");
> Also..handle00 = plc_point_by_name(L.0);?
> handle01 = plc_point_by_name(L1);?
> Is handle00 == handle 01 ?
Yes, they are handles to the same bit of the same point.
(As it happens, the handles are also completely equal to
each other.)
> Is below right ?
> handle = plc_point_by_name(L);
> handle0 = plc_point_by_name(L.0);
> handle1 = plc_point_by_name(L.1);
> handle2 = plc_point_by_name(L.2);
> handle3 = plc_point_by_name(L.3);
> plc_get(handle) = plc_get(handle0) + 2 *
plc_get(handle1) + 4 *
> plc_get(handle2) + 8 * plc_get(handle3);
Yes,
plc_get(handle)
returns exactly the same value as:
plc_get(handle0) + 2 * plc_get(handle1) + 4 *
plc_get(handle2) +
8 * plc_get(handle3);
Jiri
--
Jiri Baum <jiri baum.com.au> http://www.baum.com.au/~
jiri
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