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NX-series SSI Input Unit


Read position information from encoders with Synchronous Serial Interface (SSI).

SSI clock frequency is supported up to 2 MHz.

High-speed remote I/O control with communications cycle as fast as 125 μs.*1

Free-Run refreshing or Synchronous I/O refreshing, Task Period Prioritized refreshing *2, can be selected for refreshing with the NX-series NX1P2 CPU Unit or EtherCAT Coupler.

When the MC Function Modules of the NJ/NX/NY5-series Machine Automation Controller are used, the encoder input can be used for motion control instructions as an “axis”.

Choice of SSI Coding Methods (No conversion, binary code, or gray code)

Input edge time stamps

Multi turn and single turn SSI encoders are supported.

Data Refresh Status (Data refreshing can be checked on the host controller.)

Maximum connecting SSI cable length: 400 m

Connection to the CJ-series is possible by connecting with the EtherNet/IPTM Coupler.

*1. When using the NX-EC01[][] together with the NX701-[][][][] and NX-ECC203.
*2. Task Period Prioritized refreshing is available when the NX-ECC203 is used together.

Sysmac is a trademark or registered trademark of OMRON Corporation in Japan and other countries for OMRON factory automation products.
EtherCAT® is a registered trademark of Beckhoff Automation GmbH for their patented technology. EtherNet/IPTM is the trademarks of ODVA.
Other company names and product names in this document are the trademarks or registered trademarks of their respective companies.