3G5A2-RPT01-PE datasheet(38/182 Pages) OMRON

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2-2-3 Expansion I/O Racks

Expansion I/O Racks, shown in the following diagram, can be used to expand

the CV-series PCs. There are five models of Expansion I/O Backplane that can

be used, as shown in the following table. These vary in the number of slots that

they provide for Units (other than the Power Supply Unit and I/O Interface Unit)

and in expansion capabilities. CV500 Expansion I/O Backplanes offer complete

expansion capabilities, while CVM1 Expansion I/O Backplanes do not support

I/O Interface Units and thus must be connected directly to the CPU Backplane

(see

Single Expansion I/O Rack in this subsection).

Expansion I/O

Backplane

No. of slots

I/O Interface Unit

CV500-BI042

Yes

CV500-BI062

Yes

CV500-BI112

Yes

CVM1-BI064

CVM1-BI114

An Expansion I/O Rack can be connected either directly to the CPU Backplane

(see

Single Expansion I/O Rack in this subsection) or to an I/O Control Unit.Up to

seven Expansion I/O Racks can be connected to the I/O Control Unit on the CPU

Rack in two series unless an Expansion CPU Rack is connected, in which case

only six Expansion I/O Racks may be connected. If an Expansion CPU Rack is

connected, one of the series of Expansion I/O Racks is connected to the I/O

Control Unit on the CPU Rack and the other one is connected to the I/O Interface

Unit on the Expansion CPU Rack.

Attach a Termination Resistance Unit to the unused terminal on the I/O Interface

Unit of the last Expansion I/O Rack in each series. If two series of Expansion I/O

Racks are used, connect a Termination Resistance Unit to the last Rack in each.

Units

(Up to 4/6/11 or the following

Units: C500 I/O Units, C500

Special I/O Units, SYSMAC

BUS Masters)

I/O Connector Connects Expan-

sion I/O Rack to preceding Expan-

sion I/O, Expansion CPU, or CPU

Rack.

Termination Resistance Unit

A Termination Resistance Unit

must be connected to the unused

I/O Connecting Cable Connector

when an Expansion I/O Rack is

not connected.

I/O Connector Connects Expan-

sion I/O Rack to next Expansion

I/O Rack. When not used, connect

to a Termination Resistance Unit.

I/O Interface Unit (CV500-II201)

Connects the Expansion I/O Rack to

other Expansion Racks, the CPU Rack,

and/or an Expansion I/O Rack.

Power Supply Unit

CV500-PS221/PS211

or CVM1-PA208

Expansion I/O

Backplane

CV500-BI042/062/

112 or

CVM1-BI064/114

If only one Expansion I/O Rack is required and no Expansion CPU Rack is used,

a single Expansion I/O Rack can be connected directly to the CPU Rack without

an I/O Control Unit or I/O Interface Unit. The Racks are connected directly via the

connectors on the two Backplanes. Termination Resistance Units are also not

required. In every other respect, the Expansion I/O Rack is identical to Expan-

sion I/O Racks in connected via I/O Control and I/O Interface Units.

Single Expansion I/O Rack

Racks

Section 2-2

3G5A2-RPT01-PE Datasheet(PDF) 38 Page - Omron Electronics LLC

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