RIO Remote I/O System User Guide
Example RIO systems
Page 29
Chapter 1 Introduction
Fault tolerant link
In a typical non fault tolerant RIO system, a host card is co nnected to a peripheral (for
example, a printer) via a single link and RTA. In order to make the system fault tolerant , that
is to protect against RTA or link failure, multiple RTAs and links are added.
The next picture shows a typical system which features t wo backup RTAs and a backup link
to the host. If one RTA or link cable is damaged there is still a path from the host and system
operation is not disrupted.
For further information about installing a fault tolerant system, see Before you start on
page 33 and Installing a fault tolerant link on page 189 in Chapter 2 Installing hardware
and software.
RIO Host card
Backup link to host
Multiple RTAs to
maintain operation
in event of RTA
failure
Peripheral
For example,
printer