The RX3i control system hardware consists of an RX3i universal backplane and up to seven
Series 90-30 expansion or remote racks. The CPU can be in any slot in the universal backplane except
the last slot, which is reserved for the serial bus transmitter, IC695LRE001.
The RX3i supports user defined Function Blocks (LD logic only) and Structured Text programming.
The RX3i universal backplane uses a dual bus that provides both:
▪ High-speed PCI for fast throughput of new advanced I/O.
▪ Serial backplane for easy migration of existing Series 90-30 I/O

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.
The EIOC is an independent embedded data server. This means
that there is no need for a separate controller to process the
data being integrated into the EIOC. Control Modules needed
to process the data from the Ethernet Devices are assigned and
executed in the EIOC. In this way, communications with the
devices are fast and direct. Any parameters from the modules
running in the EIOC can be read by both S-series and M-series
controllers using External References when needed in control
strategies at the controller level.
Access to DeltaV Live graphics, DeltaV Operate graphics, and
the alarms and history collection from EIOC control modules
follows the same rules and mechanisms as control modules
running in the controllers in a DeltaV System.
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