Omron CJ1W-EIP21 用户手册

The general specifications conform to those of the CS-series and CJ-series
PLCs.

If tag data links are being used, use 100Base-TX. Otherwise, 10Base-T can
be used, but this is not recommended.

Model number

CS1W-EIP21

Type

100Base-TX (See note.)

Applicable PLCs

CS-series PLCs

Unit classification

CS-series CPU Bus Unit

Mounting location

CPU Rack or Expansion Rack

Number of Units that can be 
mounted

8 max. (including Expansion Racks)

CPU Unit 
words used

Allocated CIO Area 
words (CPU Bus Unit 
words)

25 words/Unit (one unit number’s words)

These words contain control bits and flags, the target node PLC’s operating and 
error information, Unit status, communications status, registered/normal target 
node information, and FINS/TCP connection status.

Allocated DM Area 
words (CPU Bus Unit 
words)

100 words/Unit (one unit number’s words)

These words contain the IP address display/setting area

User-set area

Any usable data area words

Target node PLC’s operating and error information, and registered/normal target 
node information

CPU Bus Unit System 
Setup

Not used.

Non-volatile memory within Ether-
Net/IP Unit (See note.)

The following settings are stored in the EtherNet/IP Unit’s non-volatile memory.

Note Unlike the regular Ethernet Units, the CPU Bus Unit Setup Area in the CPU 

Unit is not used for these settings.

1. Unit setup (communications settings for the EtherNet/IP Unit, such as the IP ad-

dress, DNS server settings, host name, baud rate, FINS/UDP settings, and FINS/
TCP settings)

2. Tag data link settings (device parameters)

Transfer 
specifica-
tions

Media access method

CSMA/CD

Modulation method

Baseband

Transmission paths

Star form

Baud rate

100 Mbit/s (100Base-TX)

Transmission media

Shielded twisted-pair (STP) cable

Categories: 100 

Ω

 at 5, 5e

Transmission distance

100 m (distance between hub and node)

Number of cascade 
connections

There is no limitation when a switching hub is used.

Current consumption (Unit)

410 mA max. at 5 V DC

Weight

171 g max.

Dimensions

35 

×

 130 

×

 101 mm (W 

×

 H 

×

 D)

Other general specifications

Other specifications conform to the general specifications of the CS-series