Omron NJ Series User Manual

6-9
6 Programming
NJ-series CPU Unit Software User’s Manual (W501)
6-2 POUs (Program Organization Units)
6
6-2-5 Details on Function Blocks
]
In a ladder diagram, function blocks are represented as rectangular boxes as shown below. Refer to
Calling Function Blocks from ST on page 6-10 for details about how to express function blocks in ST.
Function blocks consist of the following parts.
• Function Block in Ladder Diagram:
• Function Block Settings
When you create an instance of a function block definition, make the following settings.
 Function Block Name or Instruction Name
This is the function block name or instruction name assigned in the function block definition when
the function block is created.
 Instance Name
You give an instance name to a function block instance in a program to enable managing it. You
specify an instance name when you call a function block definition from a program or another func-
tion block.
Structure of Function Blocks
Function block name or instruction name
Input variable
Output variable
In-out variable
Input parameter
Output parameter
Algorithm
Instance name
Output variable
In
Q
MyFB
SetValue
InQ
InQ
SET
RESULT
Result
MyFB_instance
TRIG
OUT
Input parameters
Output parameters
Function block name
Instance name
Settings of a function block instance in a program
Internal variables
Input
variables
Output
variables
In-out
variables
Created in the Function Definition
Local Variable Table
Algorithm
•
Written as a ladder diagram or in ST.
• You can use any instructions,
user-defined functions, and user-
defined function blocks.

Omron NJ Series Specifications

General

Program Capacity	Up to 128 MB
SD Card Slot	Yes
Power Supply Voltage	24 VDC
Motion Control	Yes
USB Ports	1
Operating Temperature	0°C to 55°C
Communication Interfaces	Ethernet/IP, EtherCAT, USB
Safety Function	Optional
Storage Temperature	-20°C to 75°C
Communication Ports	USB
Dimensions	Varies by model
Weight	Varies by model