Terminology - Omron NJ501-1400 User Manual

Terminology

Terminology
Term
absolute encoder home offset
array specification
AT
axes group
Axes Group Variable
axis
Axis Variable
basic data type
cam data variable
CJ-series Unit
Communications Coupler Unit
Constant
Controller
Controller error
Controller event
Controller information
CPU Unit
derivative data type
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This data is used to restore in the CPU Unit the actual position of a Servo Drive with
an absolute encoder. The offset is the difference between the command position
after homing and the absolute data that is read from the absolute encoder.
One of the variable specifications. An array variable contains multiple elements of
the same data type. The elements in the array are specified by serial numbers
called subscripts that start from the beginning of the array.
One of the attributes of a variable.
This attribute allows the user to specify what is assigned to a variable. An I/O port
or an address in memory used for CJ-series Units can be specified.
A functional unit that groups together axes within the Motion Control Function Mod-
ule.
A system-defined variable that is defined as a structure and provides status infor-
mation and some of the axes parameters for an individual axes group.
An Axes Group Variable is used to specify an axes group for motion control instruc-
tions and to monitor the command interpolation velocity, error information, and
other information for the axes group.
A functional unit within the Motion Control Function Module. An axis is assigned to
the drive mechanism in an external Servo Drive or the sensing mechanism in an
external Encoder Input Slave Unit.
A system-defined variable that is defined as a structure and provides status infor-
mation and some of the axis parameters for an individual axis.
An Axis Variable is used to specify an axis for motion control instructions and to
monitor the command position, error information, and other information for the axis.
Any of the data types that are defined by IEC 61131-3.
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.
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.
Any of the CJ-series Units that can be used with an NJ-series Controller.
The generic name of an interface unit for remote I/O communications on a network
between NX Units and a host network master. For example, an EtherCAT Coupler
Unit is a Communications Coupler Unit for an EtherCAT network.
One of the attributes of a variable.
If you specify the Constant attribute for a variable, the value of the variable cannot
be written by any instructions, ST operators, or CIP message communications.
The range of devices that are directly controlled by the CPU Unit.
In the NJ-series System, the Controller includes the CPU Rack, Expansion Racks,
and EtherCAT slaves (including general-purpose slaves and Servo Drives).
Errors that are defined by the NJ-series System.
"Controller error" is a collective term for major fault level, partial fault level, minor
fault level, and observation Controller events.
One of the events in the NJ-series System. Controller events are errors and infor-
mation that are defined by the system for user notification. A Controller event
occurs when the system detects a factor that is defined as a Controller event.
Information that is defined by the NJ-series System that is not an error. It rep-
resents an information Controller event.
The Unit that serves as the center of control for a Machine Automation Controller.
The CPU Unit executes tasks, refreshes I/O for other Units and slaves, etc. The
NJ/NX-series CPU Units include the NX701-, NX1P2- and NJ501-
.
A data type that is defined by the user. Structures, unions, and enumerations are
derivative data types.
Description
NJ-series CPU Unit Hardware User's Manual (W500)