Introduction to IO4AB: SNAP I/O for Allen-Bradley® Controllers

Learn how to set up EtherNet/IP™ messaging between an Allen-Bradley® Logix™ controller and Opto 22’s SNAP I/O™.

Using EtherNet/IP™, Allen-Bradley® Logix controllers can communicate with remote Opto 22 I/O and take advantage of Opto 22’s distributed intelligence. With distributed intelligence, a controller (such as an Allen-Bradley controller), handles overall control but does not have to attend to every detail of every process. The I/O’s own onboard processor (also called a brain or device) has the intelligence to handle not only on/off control but also functions such as latching, counting, thermocouple linearization, even PID loops. With these functions running locally on the I/O unit, they still do their job even if communication to the controller is lost, and the load on the controller is reduced.

Explore the benefits of using IO4AB on the IO4AB Product Family page.

Summary

Summary

Learn how to set up EtherNet/IP™ messaging between an Allen-Bradley® Logix™ controller and Opto 22’s SNAP I/O™.