Terminology
42
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
union One of the derivative data types. It allows you to handle the same data as different
data types.
Unit A device that mounts to the CPU Rack or an Expansion Rack.
Unit configuration The configuration information for the Units that are set on the Sysmac Studio. This
information tells what Unit models are connected to the CPU Unit and where they
are connected.
upload To transfer data from the Controller to the Sysmac Studio with the synchronization
operation of the Sysmac Studio.
user program All of the programs in one project.
user-defined event One of the events in the NJ/NX-series System. These events are defined by the
user. “User-defined events” is a generic term for user-defined errors and
user-defined information.
user-defined variable A variable for which all of the attributes are defined by the user and can be changed
by the user.
variable A representation of data, such as a numeric value or character string, that is used in
a user program.
You can change the value of a variable by assigned the required value. “Variable” is
used as opposed to “constant,” for which the value does not change.
variable memory A memory area that contains the present values of variables that do not have AT
specifications. It can be accessed only with variables without an AT attribute.
Term Description
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