Omron NJ501-1 Series User Manual page 38

Terminology
Term
major fault level Controller error
MC Test Run
memory used for CJ-series units
minor fault level Controller error
Motion Control Function Module
motion control instruction
namespace
Network Publish
NX Units
observation
partial fault level Controller error
PDO communications
periodic task
PLC Function Module
POU
primary periodic task
process data communications
program
Range Specification
36
An error for which all NJ-series Controller control operations stop. The CPU Unit
immediately stops user program execution and turns OFF the loads for all slaves
and Units (including remote I/O).
A function to check motor operation and wiring from the Sysmac Studio.
One type of I/O memory in an NJ-series CPU Unit. It contains addresses that can
be directly specified by the user.
It can be accessed only with variables with an AT attribute. This memory is used to
access CJ-series Units and CJ-series networks.
An error for which part of the control operations for one of the function modules in
the NJ-series Controller stop.
An NJ-series CPU Unit continues operation even after a minor fault level Controller
error occurs.
One of the function modules. The MC Function Module performs motion control
based on commands from the motion control instructions that are executed in the
user program.
A function block instruction that executes motion control.
The Motion Control Function Module supports instructions that are based on func-
®
tion blocks for PLCopen motion control as well as instructions developed specifi-
cally for the Motion Control Function Module.
A system that is used to group and nest the names of functions, function block defi-
nitions, and data types.
One of the attributes of a variable.
This attribute allows you to use CIP message communications or tag data links to
read/write variables from another Controller or from a host computer.
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.
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.
An error for which all of the control operations for one of the function modules in the
NJ-series Controller stop.
An NJ-series CPU Unit continues operation even after a partial fault level Controller
error.
An abbreviation for process data communications. Data is exchanged between the
master and slaves on a process data communications cycle. (The process data
communications cycle is the same as the task period of the primary periodic task.)
A tasks for which user program execution and I/O refreshing are performed each
period.
One of the function modules. This function module executes the user program,
sends commands to the Motion Control Function Module, and provides an interface
to the USB and SD Memory Card.
An acronym for "program organization unit." A POU is a unit in a program execution
model that is defined in IEC 61131-3.
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.
The task with the highest priority.
One type of EtherCAT communications in which process data objects (PDOs) are
used to exchange information cyclically and in realtime. Process data communica-
tions are also called PDO communications.
Along with functions and function blocks, one of the three types of POUs.
Programs are assigned to tasks to execute them.
One of the variable specifications. You can specify a range for a variable in
advance. The variable can take only values that are in the specified range.
Description
NJ-series CPU Unit Hardware User's Manual (W500)