First TwinCAT PLC Project on a Beckhoff IPC
Build and verify a first TwinCAT PLC project on a Beckhoff IPC. This checklist covers target selection, EtherCAT discovery, I/O mapping, safe activation, restart tests, and commissioning records.
Manufacturer: Omron
Product No.: NJ301-1200
Country of origin:Japan
Product Type: Machine Automation Controller CPU Units
Payment: T/T, Western Union
Weight: 2000g
Dimensions: 90 mm x 90 mm x 90 mm
Shipping port: Xiamen
Warranty: 12 months
Engineered to deliver synchronized logic and motion control within the Sysmac platform, the Omron NJ301-1200 acts as a central processing hub for demanding mid-range automation architectures. By integrating motion control, PLC logic, and network connectivity into a single unified engine, this controller eliminates the latency associated with multi-processor architectures. It supports up to 8 motion control axes and offers built-in industrial Ethernet communication, facilitating seamless vertical integration from physical field devices to enterprise-level supervisory systems.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Omron |
| Model / Part Number | NJ301-1200 |
| Series | Sysmac NJ |
| Controlled Motion Axes | 8 axes (single-axis control) |
| I/O Capacity | 2,560 points maximum / 40 physical units (3 expansion racks) |
| Program Capacity | 5 MB |
| Retained Variable Memory | 0.5 MB (maintained during power interruption) |
| Non-Retained Variable Memory | 2 MB |
| Current Consumption | 1.90 A at 5 VDC (includes SD card and end cover) |
| Grounding Method | Ground resistance less than 100 Ohm |
| Operating Temperature | 0 to 55 degC (no condensation) |
| Storage Temperature | -20 to 75 degC (excluding battery) |
| Vibration Resistance | 5 to 8.4 Hz with 3.5-mm amplitude, 8.4 to 150 Hz with 9.8 m/s2 acceleration (conforms to IEC 60068-2-6) |
| Shock Resistance | 147 m/s2, 3 times in X, Y, and Z directions (conforms to IEC 60068-2-27) |
| Pollution Degree | Pollution Degree 2 (conforms to IEC 61131-2 and JIS B3502) |
| Physical Dimensions | 90 mm x 90 mm x 90 mm |
| Net Weight | 550 g (including end cover) |
| Shipping Weight | 2.0 kg |
| Battery Life | 5 years typical at 25 degC |
| Interface / Port | Functional Assignment |
|---|---|
| EtherCAT Port | Real-time synchronized motion networks; supports connection to servo drives, variable frequency drives, and remote I/O couplers. |
| EtherNet/IP Port | Standard Ethernet communication for HMI integration, peer-to-peer controller communication, and database connectivity. |
| USB Port | Direct local programming, diagnostics, and monitoring via Sysmac Studio software. |
| SD Card Slot | System backup, restoration, logging, and application program transfer. |
For larger installations, the NJ301 series scale-up pathways include the NJ501 series, which increases motion axis counts (up to 64 axes) and program memory. Program and variable structures remain fully compatible within the Sysmac Studio integrated development environment, allowing seamless deployment of identical control logic onto higher-end hardware with minor hardware target modifications.
To maintain proper thermal behavior in enclosed industrial panels, always maintain a minimum clearance of 20 mm above and below the controller unit. The integrated high-speed EtherCAT engine is highly sensitive to noise; ensure that double-shielded STP Cat5e or higher cables are used for all networking interfaces, and separate communication lines from high-voltage motor drive cabling by at least 100 mm.
Ensure the physical ground terminal (GR) is grounded directly to a dedicated grounding point with a resistance of less than 100 Ohm to prevent noise-induced communication errors. During commissioning, configure the EtherCAT ring/line topology explicitly inside Sysmac Studio before initializing the controller to prevent network communication faults (E001/E002 errors) during initial power-up cycles.
Mount the NJ301-1200 module firmly onto a standardized 35 mm DIN rail inside a protected IP54/NEMA 12 enclosure.
Affix the right-hand End Cover (provided with the CPU) to secure the internal bus structure and isolate the termination contacts.
Connect the functional ground terminal to a low-impedance ground bar using a minimum 2.0 mm² copper conductor.
Insert standard SD card or external backup media into the secure front-facing slot before powering on the unit to facilitate initial firmware verification and parameter loading.
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Returns & Warranty

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Returns & Warranty
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| Country of origin |
Japan
|