{"product_id":"omron-cs1w-etn21-ethernet-module-cs1wetn21","title":"Omron CS1W-ETN21 Ethernet Module  CS1WETN21","description":"\u003ch3 data-section-id=\"nq8ynu\" data-start=\"0\" data-end=\"18\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"19\" data-end=\"498\"\u003eThe \u003ca href=\"https:\/\/plgautomation.com\/collections\/omron\"\u003eOmron\u003c\/a\u003e CS1W‑ETN21 Ethernet module is used in industrial automation systems to provide Ethernet communication capabilities for \u003ca href=\"https:\/\/plgautomation.com\/collections\/plcs-more\"\u003eprogrammable logic controllers\u003c\/a\u003e (PLCs). Commonly installed in Omron CS‑Series PLC racks for networking, data exchange, and remote monitoring in automated machinery and control systems. Maintenance teams and system integrators use this module for system networking upgrades, Ethernet I\/O integration, and replacement of legacy communication interfaces.\u003c\/p\u003e\n\u003ch3 data-section-id=\"plkbhx\" data-start=\"500\" data-end=\"519\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"520\" data-end=\"959\"\u003eThe Omron CS1W‑ETN21 module is widely used in industrial control environments requiring reliable Ethernet connectivity between PLCs, HMIs, and supervisory systems. It is commonly found in factory automation, process control lines, packaging equipment networks, material handling systems, and distributed control systems where high‑speed Ethernet communication enables remote data access, system diagnostics, and integration with SCADA platforms.\u003c\/p\u003e\n\u003ch3 data-section-id=\"68ulmp\" data-start=\"961\" data-end=\"992\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"993\" data-end=\"1713\"\u003e• Model: CS1W‑ETN21\u003cbr data-start=\"1012\" data-end=\"1015\"\u003e• Function: Ethernet communication interface module for CS‑Series PLCs\u003cbr data-start=\"1085\" data-end=\"1088\"\u003e• Protocols supported: TCP\/IP, UDP, Modbus\/TCP, EtherNet\/IP (model dependent)\u003cbr data-start=\"1165\" data-end=\"1168\"\u003e• Port type: RJ45 10\/100 Mbps Ethernet port\u003cbr data-start=\"1211\" data-end=\"1214\"\u003e• Networking: PLC‑to‑PLC and PLC‑to‑HMI\/SCADA communication\u003cbr data-start=\"1273\" data-end=\"1276\"\u003e• Connection: Single Ethernet port per module\u003cbr data-start=\"1321\" data-end=\"1324\"\u003e• Mounting: Omron CS1 PLC rack slot mount\u003cbr data-start=\"1365\" data-end=\"1368\"\u003e• Compatibility: Omron CS1, CJ1, and related PLC systems\u003cbr data-start=\"1424\" data-end=\"1427\"\u003e• Indicators: LED status indicators for Link\/Activity\/Errors\u003cbr data-start=\"1487\" data-end=\"1490\"\u003e• Power: Supplied through PLC backplane\u003cbr data-start=\"1529\" data-end=\"1532\"\u003e• Communication distance: Standard Ethernet cabling (Cat5\/6)\u003cbr data-start=\"1592\" data-end=\"1595\"\u003e• Diagnostic capability: Network status and error reporting via PLC\u003cbr data-start=\"1662\" data-end=\"1665\"\u003e• Designed for: Industrial automation networking\u003c\/p\u003e\n\u003ch3 data-section-id=\"1ln9bp8\" data-start=\"1715\" data-end=\"1741\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"1742\" data-end=\"1883\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Omron CS1W‑ETN31 (enhanced Ethernet module)\u003cbr data-start=\"1787\" data-end=\"1790\"\u003e• Omron CJ1W‑ETN21 (Ethernet for CJ1 PLCs)\u003cbr data-start=\"1832\" data-end=\"1835\"\u003e• Omron NX‑EK2 (Ethernet communication module)\u003c\/p\u003e","brand":"Omron","offers":[{"title":"New Surplus No Box","offer_id":51705980748078,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/10_02ca94f0-6c94-4bb7-a7c8-41be148a013a.jpg?v=1775015383","url":"https:\/\/plgautomation.com\/products\/omron-cs1w-etn21-ethernet-module-cs1wetn21","provider":"PLG Automation ","version":"1.0","type":"link"}