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Item 





Specifications 









Model number 





CJ1W-EIP21









Type 





100Base-TX *1









Applicable PLCs 





NJ-series, CJ (CJ1, CJ2) series, CP1H, and NSJ series PLCs.









Unit classification 





CJ-series CPU Bus Unit









Mounting location 





CPU Rack or Expansion Rack









Number of Units that can be mounted 





NJ-series System : 4 max. (including Expansion Racks)

CJ series System and NSJ series System: 8 max. (including Expansion Racks) *2

CP1H System: 2 max.









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 EtherNet/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 address,DNS

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

2. Tag data link settings (device parameters)









Transfer

specifications 





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  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 





94 g max.









Dimensions 





31  90  65 mm (W  H  D)









Other general specifications 





Other specifications conform to the general specifications of the CJ-series.







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Omron CJ1 Series PLC-CPU Bus units CJ1W-EIP21- A&S Automation Co., Ltd

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