The RX3i universal backplane and Series 90-30 expansion/remote racks support the Series 90-30
Genius Bus Controller and Motion Control modules, and most Series 90-30/RX3i discrete and analog
I/O with catalog prefixes IC693 and IC694. RX3i modules with catalog prefixes IC695. including the
Ethernet and other communications modules can only be installed in the universal backplane. See the
PACSystems RX3i System Manual, GFK-2314 for a list of supported modules.
RX3i supports hot standby (HSB) CPU redundancy, which allows a critical application or process to
continue operating if a failure occurs in any single component. A CPU redundancy system consists of
an active unit that actively controls the process and a backup unit that is synchronized with the active
unit and can take over the process if it becomes necessary. Each unit must have a redundancy CPU
(See section 2.2 for CPUs that support redundancy).

Product Description
FOUNDATION™ fieldbus I/O is a modular subsystem that communicates digitally with field devices,
increases your input/output capacity, and gives you access to more information about your process than conventional I/O subsystems.
It greatly enhances device diagnostics that affect your control strategy and alerts operators to device malfunctions.
If you want an efficient, economical, and secure process control system, use DeltaV™ FOUNDATION fieldbus I/O.
Maximize smart device capabilities. Increase your quality and throughput by taking advantage of the added diagnostics
of FOUNDATION Fieldbus I/O devices. Field device status is updated continuously using FOUNDATION Fieldbus I/O.
For multi-variable devices, all process variables are available on the single fieldbus at the cost of a single Device Signal Tag.
Redundant H1 cards provide increased availability.
The DeltaV system offers redundant H1 interfaces. The two H1
interfaces are connected with a redundant terminal block to
provide back-up link active schedule (LAS) capability that also
maintains communication with the host system.
Transfer to the standby card is automatic and requires no special configuration.
Ongoing diagnostics ensure the standby H1 card is available on demand.
This process requires no user interaction.
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