CJ2M-CPU31

Technical specifications

Manufacturer

Omron

Manufacturer part no.

CJ2M-CPU31

Type

Omron CJ2 CPU unit

Application

PLC controller

Used with

CJ-series I/O and special units

Data memory capacity

64 K words

Logic execution time

0.04 µs

Max. number of expansion units

40

Max. number of local I/O points

2560

Number of built-in digital I/Os

0

Communication port(s)

EtherNet/IP, Ethernet TCP/IP, USB

Height

90 mm

Width

62 mm

Depth

84.5 mm

Weight

190 g

Program capacity

5 K steps

Data memory (DM)

32 K words

Extended data memory (EM)

32K words x 1 bank

Expansion racks, max

3

Technical documents (1)

• Omron product page CJ2M-CPU31

Key features

• Logic execution time 0.04 µs
• Communication ports: EtherNet/IP, Ethernet TCP/IP, USB
• Up to 40 expansion units
• Up to 3 expansion racks
• Extended data memory: 32K words x 1 bank

About the Omron CJ2M-CPU31

The Omron CJ2M-CPU31 is a CJ2M CPU unit. Omron describes it as: CPU with built-in EtherNet/IP port, 5K steps program, 32K words data memory, 32K words x 1 bank EM, 2560 I/O max, option port for RS-232C/485, USB programming port, 3 expansion racks max.

What is the CJ2M-CPU31 used for?

The CJ2M-CPU31 is the CPU of a CJ-series PLC: it runs the program and works with the CJ-series I/O and special units on its rack, and connects to EtherNet/IP through its built-in port.

Lifecycle and successor

Phased out.

Before you order

What to photograph or confirm so the right unit is quoted.

Check the model number CJ2M-CPU31 on the unit's label, with its lot number. Send us a photo of the label and we will confirm the details before quoting.