Description
Omron CS1W-ETN21 Ethernet Communication Module (100BASE-TX)
Description:
The Omron CS1W-ETN21 is a high-performance Ethernet communication module designed to expand connectivity for CS-series PLCs (Programmable Logic Controllers). This interface unit enables your PLC system to communicate directly over 100BASE-TX Ethernet networks (10/100 Mb/s), supporting TCP/IP and UDP/IP protocols for fast, reliable industrial communications.
Built with a standard RJ45 connector and designed for easy integration into CS1 CPU and expansion racks, the CS1W-ETN21 allows PLCs to interface with PCs, HMIs, SCADA systems, and other networked devices — enabling functions like FINS messaging, SNTP clock synchronization, FTP file transfer, and remote data access.
Though now listed as obsolete by the manufacturer, this Ethernet unit remains a valuable component for maintaining or upgrading legacy Omron PLC networks in manufacturing, processing plants, and industrial automation systems.
Key Features
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Genuine Omron CS1W-ETN21 Ethernet communication module for CS-series PLC systems
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Supports 100BASE-TX Ethernet (10/100 Mb/s) with TCP/IP and UDP/IP protocols
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Built-in FINS communications support for PLC networking
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FTP and SNTP functions for file transfer and clock synchronization
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Standard RJ45 Ethernet port for simple network connection
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Designed for mounting on CS1 CPU and expansion racks
Typical Applications
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PLC network integration in industrial automation
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Remote monitoring and data acquisition
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Factory production line networking
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SCADA and HMI communication interfaces
Product Details
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Manufacturer: Omron Automation & Safety
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Model / MPN: CS1W-ETN21
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Product Type: Ethernet communication interface module
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Ethernet Type: 100BASE-TX (10/100 Mb/s)
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Connector: RJ45
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Protocol Support: TCP/IP, UDP/IP, FINS
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Condition: New
The Omron CS1W-ETN21 Ethernet unit is ideal for professionals and system integrators needing reliable Ethernet connectivity between CS-series PLCs and modern industrial networks.
Ethernet Module, 100Base-TX cable, FINS communication service, FTP server functions, socket/mail transmission/mail receive, auto adj. PLC built-in clock, server/host name specification), 5V 0.38A
Weight: 0.4kg
SKU: CS1WETN21
Delivery: We ship via global express services, such as DHL, Fedex, Swiss Post.
Warranty: 3 Years AW warranty, for peace of mind.