Omron NX Series Hardware User Manual

Terminology Description
X Bus Function Module One of the function modules. This function module controls X Bus Units mounted
to the left side of the CPU Unit.
X Bus Units Units that can connect to the X Bus.
upload To transfer data from the Controller to the Sysmac Studio with the synchroniza-
tion operation of the Sysmac Studio.
information One of the event levels for Controller events or user-defined events. These are
not errors, but appear in the event log to notify the user of specific information.
Event Setup Settings that define user-defined errors and user-defined information.
event task A task that executes a user program only once when the task execution condi-
tions are met.
event log A function that recognizes and records errors and other events.
inline ST ST programming that is included within a ladder diagram.
edge One of the attributes of a variable.
This attribute makes a BOOL variable pass TRUE to a function block when the
variable changes from F
ALSE to TRUE or when it changes from TRUE to
F
ALSE.
cam data variable A variable that represents the cam data as a structure array.
A cam data variable is an array structure that consists of phases and displace-
ments.
observation One of the event levels for Controller events or user-defined events.
These are minor errors that do not affect control operations, but appear in the
event log to notify the user of specific information.
function module One of the functional units of the software configuration of the CPU Unit.
basic data type Any of the data types that are defined by IEC 61
131-3.
They include Boolean, bit string, integer, real, duration, date, time of day
, date
and time, and text string data types.
"Basic data type" is used as opposed to derivative data types, which are defined
by the user.
forced refreshing Forcing the refreshing of an input from an external device or an output to an ex-
ternal device, e.g., when the user debugs a program.
Addresses that are subject to forced refreshing can still be overwritten from the
user program.
union One of the derivative data types. It allows you to handle the same data as differ-
ent data types.
global variable A variable that can be read or written from all POUs (programs, functions, and
function blocks).
minor fault level Controller error An error for which some of the control operations for one of the function modules
in the NJ/NX-series Controller stop.
An NJ/NX-series CPU Unit continues operation even after a minor fault level
Controller error occurs.
Special Unit Setup A generic term for the settings for a Special Unit, including the settings in allocat-
ed DM Area words.
structure One of the derivative data types. It consists of multiple data types placed togeth-
er into a layered structure.
Constant One of the attributes of a variable.
If you specify the Constant attribute for a variable, the value of the variable can-
not be written by any instructions, ST operators, or CIP message communica-
tions.
Terminology
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NX-series NX502 CPU Unit Hardware User's Manual (W629)

Omron NX Series Specifications

General

Brand	Omron
Model	NX Series
Category	Controller
Language	English