12.4.30    SCANTAG

Description:   (Supported by only some device types including: LANSTAR I) Updates selected constant scan IO tag.   Interrupts normal scanning by communications driver to include immediate request for update the selected tag. Note that Display scan tags are updated when screen is called or refreshed.  


Tcl:              SCANTAG tagname

JScript:         SCANTAG("tagname");

VB Script:      SCANTAG "tagname"

Argument:     none

See Also:       SCANSCREEN           


# Tcl




The tagname can be specified in order to only update that one tag. Use the %TPICKTAG tag to allow a single button for use with all tags on the screen.  Any text type tag can be used to contain the name of the tag using the @ sign.