Terminology
Term Description
AT 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 ad-
dress in memory used for CJ-series Units can be specified.
CJ-series Unit Any of the CJ-series Units that can be used with an NJ-series Controller.
memory used for CJ-series Units One type of I/O memory that contains addresses to which variables can be assigned, for ex-
ample, when accessing a CJ-series Unit or CJ-series network. It can be accessed only with
variables with an AT attribute.
CPU Unit 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-££££, NX102-££££, NX1P2-££££, NJ501-££££.
EtherCAT Master Function Module One of the function modules. This function module controls the EtherCAT slaves as the
EtherCA
T master
.
EtherNet/IP Function Module One of the function modules. This function module controls the built-in EtherNet/IP port.
FB An acronym for "function block."
FUN An abbreviation for "function."
I/O port A logical interface that is used by the CPU Unit to exchange data with an external device
(slave or Unit).
I/O map settings Settings that assign variables to I/O ports. Assignment information between I/O ports and
variables.
I/O refreshing Cyclic data exchange with external devices that is performed with predetermined memory
addresses.
MC Test Run A function to check motor operation and wiring from the Sysmac Studio.
NX bus The NX-series internal bus. NX102 and NX1P2 CPU Units have the NX bus.
NX Bus Function Module One of the function modules. This function module controls NX Units attached to the right
side of the CPU Unit.
NX Units Any of the NX-series Units that perform I/O processing with connected external devices. The
Communications Coupler Units are not included with the NX Units.
PDO communications An abbreviation for process data communications. Data is exchanged between the master
and slaves on a process data communications cycle. (The process data communications cy-
cle is the same as the task period of the primary periodic task.)
PLC Function Module One of the function modules. This function module executes the user program, sends com-
mands to the Motion Control Function Module, and provides an interface to the USB and SD
Memory Card.
POU An acronym for "program organization unit". A POU is a unit in a program execution model
that is defined in IEC 61
131-3.
A POU contains an algorithm and a local variable table and forms the basic unit used to build
a user program.
There are three types of POUs: programs, functions, and function blocks.
SDO communications One type of EtherCA
T communications in which service data objects (SDOs) are used to
transmit information whenever required.
Sysmac Studio A computer software application for setting, programming, debugging, and troubleshooting
NJ/NX-series Controllers. It also provides operations for motion control and a Simulator.
upload T
o transfer data from the Controller to the Sysmac Studio with the synchronization 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 conditions 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.
Terminology
44
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
To Next Page
Loading...
Need help?
General
