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GLOSSARY OF TERMS – Script Language
OMRON
Page 172
Revision 2.0
Network
1. Part of the PLC configuration, based on the device type. The number
of Networks available is dependant on the device type.
2. A number of computers linked together with a central processing point
known as a Server which is accessible to all computers. Networks
affect CX-Supervisor in that further Network associated options are
available if the computer is Network connected.
Non-Volatile
A point that is designated as ‘non-volatile’ is a point whose value is saved
on disk and automatically reloaded when CX-Supervisor resumes
execution.
NOT
A logic operator used to interrogate Boolean type points which produces
the Boolean inverse of the supplied argument. An example of NOT is that
if
a
is a statement and is ‘FALSE’, then NOT returns ‘TRUE’. If
a
is a
statement and is ‘TRUE’, then NOT returns ‘FALSE’.
Object
In CX-Supervisor, an object can be text, graphics, a control, a bitmap, or
ActiveX object as created in the development environment. A complex
object can exist as a combination of two or more objects of any of the
above types. Specifically, graphical objects can be categorised as a line, an
arc, a polygon (including a square and rectangle), a round rectangle, an
ellipse (including a circle), or a polyline. A control is essentially a
complex graphic object and is specifically either a pushbutton, a toggle
button, a slider, a trend graph, a rotational gauge or a linear gauge.
OLE-DB
OLE-DB is the underlying database technology, on which ADO relies.
OLE-BD is designed to be the successor to ODBC.
Operand
The term used for constants or point variables.
Operator
A symbol used as a function, with infix syntax if it has two arguments (e.g.
“+”) or prefix syntax if it has only one argument (e.g. NOT). The CX-
Supervisor script language uses operators for built-in functions such as
arithmetic and logic.
OR
A logic operator used to interrogate Boolean type points. OR returns
‘TRUE’ if any of the supplied arguments are ‘TRUE’. An example of OR
is that if
a
is a statement and
b
is a statement, OR will return ‘TRUE’ if
either
a
and
b
are ‘TRUE’. If both statements return ‘FALSE’ then OR
will return ‘FALSE’.
Pages
The combination and manipulation of pages containing objects within
projects forms the basis of CX-Supervisor. More than one page can exist
for each project. The pages in a project provide the visual aspect of CX-
Supervisor corresponding to a display with the objects contained in each
page providing a graphical representation of the system being monitored.
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