Omron NJ Series User Manual

6 Programming
6-112
NJ-series CPU Unit Software User’s Manual (W501)
6-6 Instructions
This section describes the instructions that are pre-defined by the NJ-series Controller.
For details on these instructions, refer to the NJ-series Instructions Reference Manual (Cat. No. W502)
and NJ-series Motion Control Instructions Reference Manual (Cat. No. W508).
Instructions are the smallest unit of the processing elements that are provided by OMRON for use in
POU algorithms. Instructions are classified as shown below.
Programs, user-defined functions, and user-defined function blocks consist of these instructions.
The fundamental specifications of the instructions follow the specifications of functions and function
blocks.
This section describes specifications that are unique to instructions.
 Locations
Instructions for ladder diagram inputs and outputs have certain positions where they can be placed,
as shown below.
6-6-1 Instructions
6-6-2 Basic Understanding of Instructions
Ladder Diagram Structure Elements (Inputs and Outputs)
Classification Locations Diagram
Input
instructions
Logical start Connected directly to the left bus bar
or is at the beginning of an instruction
block.
Intermediate
instructions
Between a logical start and the output
instruction.
Output instructions Connected directly to the right bus
bar.
Instructions
FB instructions
FUN instructions
ST language statements
Ladder diagram structure elements (inputs and outputs)

Omron NJ Series Specifications

General

Brand	Omron
Model	NJ Series
Category	Controller
Language	English