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Omron CS CJ1W-ETN21 - User Manual

Omron CS CJ1W-ETN21
242 pages
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OPERATION MANUAL
Ethernet Units
Construction of Applications
SYSMAC CS and CJ Series
CS1W-ETN21 (100Base-TX)
CJ1W-ETN21 (100Base-TX)
Cat. No. W421-E1-03

Table of Contents

Questions and Answers

  • P
    Patty JacksonJul 29, 2025
    What to do for Omron CS CJ1W-ETN21 Network Hardware error code 03C4?
    • M
      Meredith MorenoJul 29, 2025
      To resolve error code 03C4 on your Omron Network Hardware, you can either: * Correct the settings for each server. * Inspect the communications path (Ethernet Unit, cable connections, hub, router, server) and fix the cause of the error.
  • B
    Bruce BrownAug 2, 2025
    What to do for Omron Network Hardware error code 03C1?
    • L
      laraelizabethAug 2, 2025
      To fix error code 03C1, set the server settings correctly based on the information provided in the detailed error code.
  • T
    taylorbishopAug 6, 2025
    How to fix Omron CS CJ1W-ETN21 Network Hardware error code 021A?
    • J
      Jack MooreAug 6, 2025
      To resolve error code 021A, recreate the data specified by the 2nd byte of the detailed error code.
  • D
    Daniel DuncanAug 10, 2025
    How to resolve specified word or specified bit data area/ address error on Omron CS CJ1W-ETN21 Network Hardware?
    • R
      Robin BellAug 10, 2025
      To resolve errors related to specified word or bit data area/address, ensure that you correctly set the data area and address for the specified word or bit.
  • Y
    yolandamontgomeryAug 15, 2025
    How to fix details of trigger setting error on Omron CS CJ1W-ETN21?
    • C
      carriehughesAug 15, 2025
      To correct trigger setting errors, ensure that you correctly set the trigger type setting.
  • T
    Tracy StephensonAug 19, 2025
    What to do if Omron CS CJ1W-ETN21 shows lit RUN with flashing HOST indicator?
    • E
      Erica JonesSep 12, 2025
      If the RUN indicator is lit and the HOST indicator is flashing, it indicates an error in the server settings (DNS, SMTP, or POP3) within the Unit Setup. Check the Error Status Flags and error log to identify and correct the problematic setting. If the error persists after correction, consider replacing the CPU Unit.
  • H
    Heather CollinsAug 23, 2025
    What to do if Omron Network Hardware shows not lit RUN and flashing HOST indicator?
    • V
      Valerie CamposAug 23, 2025
      If the RUN indicator is not lit and the HOST indicator is flashing, it could be due to: * An authentication error in 'POP before SMTP'. * A communications problem with the server. * A network failure causing an access timeout. To resolve this: * Verify and correct the POP settings (account and password). * Check the communications path (Ethernet Unit, cable connections, hub, router, and server) for any issues or damage.

Summary

Precautions for Using OMRON Ethernet Units

Introduction to Ethernet Unit Communications

Mail Send Function: Operations and Specifications

Mail Send Function Overview and Details

Provides an overview of the Mail Send Function, its details, and comparison with earlier models.

Mail Send Function Specifications

Details specifications for destination addresses, subject, body, attached files, and mail triggers.

Using the Mail Send Function: Procedure and Settings

Guides users on performing the Mail Send Function, including setup and mail address configuration.

Receive Mail Function: Operations and Specifications

Mail Receive Function Overview and Commands

Introduces the Mail Receive Function, remote mail commands, and their specifications.

Using the Mail Receive Function: Procedure and Settings

Details the procedure and required settings for using the Mail Receive Function.

FTP Server: Functions and Operations

FTP Server Overview and Specifications

Provides an overview of the FTP server function and its technical specifications.

Using the FTP Server Function and Commands

Guides on using the FTP server, including procedures, settings, and available commands.

Automatic Clock Adjustment Function

Using the Automatic Clock Adjustment Function

Details the procedure and settings required for automatic clock synchronization.

Socket Services: Functionality and Usage

Overview of Socket Communications and Protocols

Explains socket basics, port numbers, and differences between TCP and UDP protocols.

Socket Service Function Guide

Details socket service functions, how to use them with switches or CMND(490).

Using Socket Services with CMND(490): Examples

Illustrates TCP/IP and UDP/IP communications programming examples using CMND(490).

FINS Communications for Host Applications

Overview of FINS Communications on Ethernet

Introduces FINS communications over Ethernet, including FINS/UDP and FINS/TCP methods.

Appendices: Technical Information

Manual Understanding and Safety Guidelines

Application Considerations and Suitability

Omron CS CJ1W-ETN21 Specifications

General IconGeneral
ModelCJ1W-ETN21
CategoryNetwork Hardware
ManufacturerOmron
Number of Ports1
Communication StandardEthernet
Data Link LayerIEEE 802.3
Transmission Speed10/100 Mbps
TypeEthernet Unit
SeriesCJ Series
Compatible PLC SeriesCJ Series
Communication ProtocolTCP/IP
Power Supply24 VDC
Weight0.15 kg
IP Address Settingrotary switch or software

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