Motion controller
Omron Sysmac NX7 (NX701) CPU motion controller
Top-end Sysmac controller with two motion cores, up to 256 axes, a 125 µs primary task cycle and 512 EtherCAT nodes.
Key specifications
| Fieldbus | EtherCAT master (512 nodes), 2x EtherNet/IP 1 Gbps |
|---|---|
| Axes max | 256 |
| Primary task cycle | 0.125 ms |
| Memory | 80 MB program / 260 MB variables |
| Models | NX701-1600/-1620 (128 axes), NX701-1700/-1720 (256 axes), NX701-Z600 AI controller |
Summarised in our own words from OMRON Corporation's published data; series maxima, individual models vary. Last checked 2026-10-30. Source 1
Specify Motion is not affiliated with OMRON Corporation. Omron and Sysmac NX7 (NX701) CPU are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Typical applications
Engineer support
Speak to our engineers about your project
Our experienced engineers are on hand, ready to help with your project. Whether you need the Omron Sysmac NX7 (NX701) CPU itself, help sourcing it, or a modified or custom design built around your load, speed and space, tell us what the machine has to do and we'll come back with the right option.
- Help sourcing Sysmac NX7 (NX701) CPU and spares for installed machines
- Modified and custom designs when a catalogue part doesn't fit
- Complete axis: motor, drive, gearing and feedback matched together
What a motion controller is
A motion controller plans and coordinates movement for one or more axes, sending position, velocity or torque commands to servo or stepper drives. It generates trajectories with defined acceleration and jerk, synchronises axes for interpolation, electronic gearing and camming, and handles homing, limits and registration inputs. Commands reach drives over pulse, analogue or, most commonly now, EtherCAT and other real-time networks. Many controllers also include PLC functions to IEC 61131-3, combining logic and motion.
When engineers choose a motion controller
Choose a dedicated motion controller when a machine needs coordinated multi-axis motion beyond basic point-to-point moves, such as robots, gantries, packaging and CNC. It gives deterministic timing and motion libraries. The trade-offs are cost, programming effort and ecosystem lock-in. For simple machines with a few independent axes, a PLC with motion function blocks or intelligent drives with stored moves may be enough.
How to specify the Omron Sysmac NX7 (NX701) CPU
Send these with your enquiry and an engineer can confirm the right Sysmac NX7 (NX701) CPU variant or an equivalent:
- Number of axes and drives
- Network and cycle time (ms)
- Motion functions: interpolation, camming, robotics
- Programming environment and languages
- I/O and expansion
- HMI and connectivity
- Safety integration
Common mistakes to avoid
- Choosing a controller that does not support the drives' network
- Underestimating cycle time needs for many axes
- Ignoring programming tools and skills in the team
- Not planning for future axis count
Omron Sysmac NX7 (NX701) CPU: frequently asked questions
What is the Omron Sysmac NX7 (NX701) CPU?
Top-end Sysmac controller with two motion cores, up to 256 axes, a 125 µs primary task cycle and 512 EtherCAT nodes. It is made by OMRON Corporation; Specify Motion can help source it or propose an equivalent.
Who makes the Omron Sysmac NX7 (NX701) CPU?
The Omron Sysmac NX7 (NX701) CPU is made by Omron (OMRON Corporation) and is listed here for engineers comparing options. Specify Motion is not affiliated with OMRON Corporation; brand names are used only to identify the product.
Is there an alternative to the Omron Sysmac NX7 (NX701) CPU?
Yes. Our engineers can propose an equivalent built around your load, speed and environment. An engineer confirms the fit against your application before recommending anything.
What is the difference between a motion controller and a PLC?
A PLC handles machine logic, sequencing and I/O. A motion controller specialises in trajectory planning and coordinating axes. Many modern controllers combine both, running PLC logic and motion libraries on one CPU. Choose based on axis count, motion complexity and timing requirements.
Why is EtherCAT common for motion control?
EtherCAT offers short cycle times, precise synchronisation using distributed clocks and simple cabling, which suit coordinated multi-axis motion. Many drives and I/O devices support it. Other real-time networks such as PROFINET IRT and Sercos are also used, so check what the drives and controller support.
Further reading: How to select a motion controller or plc · Controllers and PLCs
Other motion controller series
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Engineer support
Our engineers are ready to help with your project
Tell us about your project and how you use the Omron Sysmac NX7 (NX701) CPU: the load, speed, duty and environment. An experienced engineer will review it and reply, normally within one working day.
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