3G5A2-RPT01-E datasheet(43/182 Pages) OMRON

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Expansion Data Memory

An Expansion Data Memory Unit may be used only in a CV1000-CPU01-EV1,

CV2000-CPU01-EV1, or CVM1-CPU21-EV2 CPU. The Expansion Data

Memory Unit fits into the slot located on the upper left side of the CPU. The Ex-

pansion Data Memory Unit is optional. There are three models of Memory Units

available with different memory capacities. The addition of an Expansion Data

Memory Unit increases the data memory capacity of the CV1000, CV2000, or

CVM1-CPU21 from 24K words (D00000 to D24575) to up to 256K words. Refer

to the

CV-series PC Operation Manual: Ladder Diagrams for details on PC

memory and addressing conventions.

Model

Memory capacity

Word assignment

CV1000-DM641

64K words

E00000 to E32765 x 2 banks

CV1000-DM151

128K words

E00000 to E32765 x 4 banks

CV1000-DM251

256K words

E00000 to E32765 x 8 banks

When mounted to the CPU, the Expansion Data Memory Unit is backed up by

the battery mounted in the CPU. Provided the Unit has been mounted to the

CPU for a duration of at least 1 minute, a charged capacitor built-in to the

Memory Unit allows the Unit to be removed from the CPU for up to 10 minutes

without memory loss.

Memory element

Pullout

lever

Backup

capacitor

Expansion Data Memory Unit

CPU

connector

Rack Components

Section 2-3

3G5A2-RPT01-E Datasheet(PDF) 43 Page - Omron Electronics LLC