Omron NJ101 PLC Programmable Logic Controller
The Omron NJ101 series is an entry-level model in the Sysmac NJ Machine Automation Controller family, offering compact, all-in-one control for logic, motion, and networking. It’s designed for machine builders seeking fast and deterministic control with minimal hardware footprint—ideal for applications that require precision motion and integrated automation.
Categories:
Omron NJ Series PLC- Integration of Logic and Motion in one CPU.
- Conforms to IEC 61131-3 (JIS B 3503) standard programming and PLCopen function blocks for Motion Control.
Programming with variables allows users to create complex programs efficiently. - Fast and accurate control by synchronizing all EtherCAT devices, such as vision sensors, servo drives, and field devices, with the PLC and Motion Engines.
- Offers speed without compromising on reliability and robustness expected from PLCs.
- Complete RAS functions: Transmission frame error check, timeout, bus diagnosis, Watchdog (WDT), memory check, and topology check, etc.
- Ideal for simple machines.
- Linear and circular interpolation.
- Electronic gear and cam synchronization.
| Specification | Description | |||
|---|---|---|---|---|
| Item | NJ101 | |||
| Enclosure | Mounted in a panel | |||
| Grounding Method | Ground to less than 100 Ω | |||
| Dimensions (height×depth×width) | 90 mm × 90 mm × 90 mm | |||
| Weight | 550 g (including the End Cover) | |||
| Current Consumption | 5 VDC, 1.90 A (including SD Memory Card and End Cover) | |||
| Operation Environment | Ambient Operating Temperature | 0 to 55°C | ||
| Ambient Operating Humidity | 10% to 90% (with no condensation) | |||
| Atmosphere | Must be free from corrosive gases. | |||
| Ambient Storage Temperature | -20 to 75°C (excluding battery) | |||
| Altitude | 2,000 m or less | |||
| Pollution Degree | 2 or less: Meets IEC 61010-2-201. | |||
| Noise Immunity | 2 kV on power supply line (Conforms to IEC 61000-4-4.) | |||
| Overvoltage Category | Category II: Meets IEC 61010-2-201. | |||
| EMC Immunity Level | Zone B | |||
| Vibration Resistance | Conforms to IEC 60068-2-6. 5 to 8.4 Hz with 3.5-mm amplitude, 8.4 to 150 Hz Acceleration of 9.8 m/s² for 100 min in X, Y, and Z directions (10 sweeps of 10 min each = 100 min total) | |||
| Shock Resistance | Conforms to IEC 60068-2-27. 147 m/s², 3 times in X, Y, and Z directions (100 m/s² for Relay Output Units) | |||
| Battery | Life *1 | 5 years at 25°C | ||
| Model | CJ1W-BAT01 | |||
| Applicable Standards *2 | cULus, EU, UKCA, RCM, KC, NK, LR *3 | |||
| Function | Specification | ||||
|---|---|---|---|---|---|
| Item | NJ101 | ||||
| 1[][]0 | 9[][]0 | ||||
| Processing time | Instruction Execution Times | LD instruction | 3.0 ns (4.5 ns or less) *2 | ||
| Math Instructions (for Long Real Data) | 63 ns or more *2 | ||||
| Program- ming | Program capacity *3 | Size | 3 MB (60 KS) | ||
| Number | POU definition | 450 | |||
| POU instance | 1,800 | ||||
| Variables capacity | No Retain Attribute *4 | Size | 2 MB | ||
| Number | 22,500 | ||||
| Retain Attribute *7 | Size | 0.5 MB | |||
| Number | 5,000 | ||||
| Data type | Number | 1,000 | |||
| Memory for CJ-Series Units (Can be Specified with AT Specifications for Variables.) | CIO Area | 6,144 words (CIO 0 to CIO 6143) | |||
| Work Area | 512 words (W0 to W511) | ||||
| Holding Area | 1,536 words (H0 to H1535) | ||||
| DM Area | 32,768 words (D0 to D32767) | ||||
| EM Area | 32,768 words × 4 banks (E0_00000 to E3_32767) *8 | ||||
| Unit config- uration | Maximum Number of Connectable Units | Maximum number of CJ/ NX unit per CPU Rack or Expansion Rack | 10 Units | ||
| Maximum number of CJ unit on the system | 40 Units | ||||
| Maximum number of NX unit on the system | 400 (on NX series EtherCAT slave terminal) | ||||
| Maximum number of Expansion Racks | 3 max. | ||||
| I/O Capacity | Maximum number of I/O Points on CJ-series Units | 2,560 points max. | |||
| Power Supply Unit for CPU Rack and Expansion Racks | Model | NJ-P[]3001 | |||
| Power OFF Detection Time | AC Power Supply | 30 to 45 ms | |||
| DC Power Supply | 22 to 25 ms | ||||
| Motion control | Number of Controlled Axes | Maximum Number of Controlled Axes | Maximum number of axes which can be defined. | -- | |
| 6 axes | |||||
| Motion control axes | Maximum number of motion control axes which can be defined. All motion control function is available. | ||||
| 6 axes | |||||
| Maximum number of used real axes | Maximum number of used real axes. The Number of used real axes includes following servo axes and encoder axes. | ||||
| 2 axes | |||||
| Used motion control servo axes | Maximum number of servo axes which all motion control function is available. | ||||
| 2 axes | |||||
| Maximum number of axes for linear interpolation axis control | 4 axes per axes group | ||||
| Number of axes for circular interpolation axis control | 2 axes per axes group | ||||
| Maximum Number of Axes Groups | 32 groups | ||||
| Motion Control Period | The same control period as that is used for the process data communications cycle for EtherCAT. | ||||
| Cams | Number of Cam Data Points | Maximum Points per Cam Table | 65,535 points | -- | |
| Maximum Points for All Cam Tables | 262,140 points | ||||
| Maximum Number of Cam Tables | 160 tables | ||||
| Position Units | Pulses, millimeters, micrometers, nanometers, degrees or inches | ||||
| Override Factors | 0.00% or 0.01% to 500.00% | ||||
| Peripheral USB port | Supported Services | Sysmac Studio connection | |||
| Physical Layer | USB 2.0-compliant B-type connector | ||||
| Transmission Distance between Hub and Node | 5 m max. | ||||
| Built-in EtherNet/IP Port | Number of port | 1 | |||
| Physical Layer | 10Base-T or 100Base-TX | ||||
| Frame length | 1514 max. | ||||
| Media Access Method | CSMA/CD | ||||
| Modulation | Baseband | ||||
| Topology | Star | ||||
| Baud Rate | 100 Mbps (100Base-TX) | ||||
| Transmission Media | STP (shielded, twisted-pair) cable of Ethernet category 5, 5e or higher | ||||
| Maximum Transmission Distance between Ethernet Switch and Node | 100m | ||||
| Maximum Number of Cascade Connections | There are no restrictions if Ethernet switch is used. | ||||
| CIP service: Tag Data Links (Cyclic Communi- cations) | Maximum Number of Connections | 32 | |||
| Packet interval *10 | 1 to 10,000 ms in 1.0-ms increments *11 Can be set for each connection. (Data will be refreshed at the set interval, regardless of the number of nodes.) | ||||
| Permissible Communications Band | 3,000 pps *12 *13 (including heartbeat) | ||||
| Maximum Number of Tag Sets | 32 | ||||
| Tag types | Network variables, CIO, Work, Holding, DM, and EM Areas | ||||
| Number of tags per connection (i.e., per tag set) | 8 (7 tags if Controller status is included in the tag set.) | ||||
| Maximum Link Data Size per Node (total size for all tags) | 256 | ||||
| Maximum number of tag | 19,200 bytes | ||||
| Maximum Data Size per Connection | 600 bytes | ||||
| Maximum Number of Registrable Tag Sets | 32 (1 connection = 1 tag set) | ||||
| Maximum Tag Set Size | 600 bytes (Two bytes are used if Controller status is included in the tag set.) | ||||
| Multi-cast Packet Filter *14 | Supported. | ||||
| Cip Message Service: Explicit Messages | Class 3 (number of connections) | 32 (clients plus server) | |||
| UCMM (non- connection type) | Maximum Number of Clients that Can Communicate at One Time | 32 | |||
| Maximum Number of Servers that Can Communicate at One Time | 32 | ||||
| Maximum number of TCP socket service | 30 | ||||
| Built-in EtherCAT Port | Communications Standard | IEC 61158 Type12 | |||
| EtherCAT Master Specifications | Class B (Feature Pack Motion Control compliant) | ||||
| Physical Layer | 100BASE-TX | ||||
| Modulation | Baseband | ||||
| Baud Rate | 100 Mbps (100Base-TX) | ||||
| Duplex mode | Auto | ||||
| Topology | Line, daisy chain, branching and ring *17 | ||||
| Transmission Media | Twisted-pair cable of category 5 or higher (double-shielded straight cable with aluminum tape and braiding) | ||||
| Maximum Transmission Distance between Nodes | 100m | ||||
| Maximum Number of Slaves | 64 | ||||
| Range of node address | 1-192 | ||||
| Maximum Process Data Size | Inputs: 5,736 bytes Outputs: 5,736 bytes *18 | ||||
| Maximum Process Data Size per Slave | Inputs: 1,434 bytes Outputs: 1,434 bytes | ||||
| Communications Cycle | 1,000/2,000/4,000 μs | ||||
| Sync Jitter | 1 μs max. | ||||
| Internal Clock | At ambient temperature of 55°C: -4.5 to +4.5 min error per month At ambient temperature of 25°C: -3.5 to +3.5 min error per month At ambient temperature of 0°C: -4.5 to +4.5 min error per month | ||||
| Product name | Specifications | Model | |||
|---|---|---|---|---|---|
| I/O capacity/Model Standards maximum number of configuration Units (Expansion Racks) | Program capacity | Memory capacity for variables | Number of motion axes | ||
| NJ101 CPU Units | 2,560 points/40 Units (3 Expansion Racks) | 5 MB | 0.5 MB: Retained during power interruption 2 MB: Not retained during power interruption |
2 | NJ101-1000 |
| 0 | NJ101-9000 | ||||
|
Catalog Name
|
Catalog Number[size]
|
Last Update
|
|
|---|---|---|---|
| NJ-Series Data Sheet | P140-E1-25 [5902KB] |
Jul 01, 2025 | NJ-Series Data Sheet |
| NJ/NX Series Controller Catalog | P089-E1-29 [4858KB] |
Mar 03, 2025 | NJ/NX Series Controller Catalog |
| Sysmac Automation Platform Catalog | P079-E1-34 [11591KB] |
Mar 03, 2025 | Sysmac Automation Platform Catalog |
| Applicable Models of Cable Redundancy Function | R200-E1-06 [213KB] |
Aug 26, 2024 | Applicable Models of Cable Redundancy Function |
| HMC-SD292/492/1A2 Data Sheet | - [244KB] |
Jun 05, 2023 | HMC-SD292/492/1A2 Data Sheet |
Applications
- Pick-and-place and small robotics
- Compact packaging machinery
- Material handling
- Labeling and printing systems
- Inspection and vision-based automation
Why Choose
- Cost-effective entry into Sysmac automation
- Real-time motion and logic in one platform
- Simple programming with structured text, ladder, or function blocks
- Scalable and future-proof for IoT/Industry 4.0 integration
- Compact footprint with high reliability
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