Omron NJ301-1100 PLC CPU Unit

Technical Overview

NJ-series machine automation CPU unit with integrated EtherCAT master and EtherNet/IP communications, designed for motion and sequence control. The NJ301-1100 variant is the 4-axis CPU in the NJ301 lineup, with 5 MB program capacity and built-in industrial networking for coordinated machine control.

Key Features

Motion control and sequence control in one CPU unit
Built-in EtherCAT Master and EtherNet/IP communications
Supports up to 4 synchronous axes
Program capacity: 5 MB
Variable memory: 0.5 MB retained during power interruption plus 2 MB non-retained
Primary task cycle time: 0.5 ms
USB communication port included
Expandable with optional communication interfaces such as CAN, DeviceNet, PROFIBUS, PROFINET, and serial

Technical Specification Matrix

Parameter	Value
Product family	NJ-Series NJ301 CPU Unit
Controller functionality	Motion control, Sequence control
Max. number of synchronous axes	4
Max. number of axes (including virtual)	15
Primary task cycle time	0.5 ms
Program memory	5 MB
Variables memory	2.5 MB total
Retained variable memory during power interruption	0.5 MB
Non-retained variable memory	2 MB
Communication ports	EtherCAT Master, EtherNet/IP, USB
Optional communication interfaces	CAN, CompoNet Master, DeviceNet Master, DeviceNet Slave, EtherCAT Slave, MODBUS Master, MODBUS Slave, PROFIBUS DP Master, PROFIBUS DP Slave, PROFINET Master, Serial RS-232C, Serial RS-422, Serial RS-485
I/O capacity / maximum configuration units	2560 points / 40 units (3 expansion racks)
Supply voltage	100 to 240 VAC
Current consumption	6.0 A
Power consumption	30 W

Industrial Applications

1. High-speed servo packaging line coordination

Coordinates up to 4 synchronous axes with 0.5 ms task timing for camming, indexing, and synchronized transfer motion in packaging machinery.

Problem Solved

Eliminates timing drift and axis desynchronization in fast multi-axis packaging systems.

EtherCAT4 synchronous axes0.5 ms cycle timemotion control

2. Flexible assembly machine cell controller

Controls sequence logic and motion in a compact machine cell using Ethernet-based integration and expandable industrial communication options for field devices.

Problem Solved

Reduces controller count while supporting mixed motion, I/O, and networked peripherals.

sequence controlEtherNet/IPUSBindustrial communication options

3. Precision cut-to-length and feeder synchronization

Uses the 4-axis motion engine to synchronize feeder, cutter, and positioning axes in cut-to-length machinery with deterministic motion control.

Problem Solved

Maintains consistent cut position and feed coordination in variable-speed production lines.

synchronized axesmotion controldeterministic controlEtherCAT Master