![Advantech EKI-6558TI User Manual Download Page 31](http://html1.mh-extra.com/html/advantech/eki-6558ti/eki-6558ti_user-manual_2858428031.webp)
2.10 Coupling-Ring Application
In the network, it may have more than one X-Ring group. Using the coupling ring
function can connect each X-Ring for redundant backup. It can ensure the
transmissions between two ring groups not to fail. The following figure is a sample of
coupling ring application.
21 Chapter2