Omron NX-PA Series User Manual page 41

Term
Initial Value
inline ST
instruction
literal
local variable
main memory
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 bus
NX Units
observation
partial fault level Controller error
PDO communications
periodic task
NX-series CPU Unit Hardware User's Manual (W535)
One of the attributes of a variable. The variable is set to the initial value in the fol-
lowing situations.
• When power is turned ON
• When the CPU Unit changes to RUN mode
• When you specify to initialize the values when the user program is transferred
• When a major fault level Controller error occurs
ST programming that is included within a ladder diagram program.
The smallest unit of the processing elements that are provided by OMRON for use
in POU algorithms. There are ladder diagram instructions (program inputs and out-
puts), function instructions, function block instructions, and ST statements.
A constant expression that is used in a user program.
A variable that can be accessed only from inside the POU in which it is defined.
"Local variable" is used as opposed to "global variable."
Local variables include internal variables, input variables, output variables, in-out
variables, and external variables.
The memory inside the CPU Unit that is used by the CPU Unit to execute the OS
and user program.
An error for which all NJ/NX-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.
A type of I/O memory specified as the assignment destination of variables when
accessing a CJ-series Unit and CJ-series network.
It can be accessed only with variables with an AT attribute.
An error for which part of the control operations for one of the function modules in
the NJ/NX-series Controller stop.
The NJ/NX-series CPU Unit continues operation even after a minor fault level Con-
troller 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.
The NX-series internal bus. An NX1P2 CPU Unit has the NX bus.
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/NX-series Controller stop.
An NJ/NX-series CPU Unit continues operation even after a partial fault level Con-
troller error.
An abbreviation for process data communications. Data is exchanged between the
master and slaves on a process data communications cycle. (The process data com-
munications cycle is the same as the task period of the primary periodic task.)
A task for which user program execution and I/O refreshing are performed each
period.
Description
Terminology
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