{"product_id":"emerson-st-1218-8-point-digital-input-module","title":"Emerson ST-1218 8-Point Digital Input Module","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eST-1218\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a compact, high-density digital input module from the PACSystems RSTi distributed I\/O family (formerly GE Fanuc, now Emerson). Designed for industrial automation and remote I\/O architectures, this module provides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8 discrete input channels\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor monitoring field devices such as proximity switches, limit switches, and push buttons.\u003c\/p\u003e\n\u003cp\u003eThe ST-1218 utilizes a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSink (Positive Logic \/ PNP)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econfiguration, accepting\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e12\/24V DC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esignals and converting them into logical data for the PLC or network adapter.\u003c\/p\u003e\n\u003cp\u003eTo ensure stable operation in electrically noisy environments, the module features\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eoptocoupler isolation\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebetween field-side I\/O and internal logic circuits. Its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eultra-slim 12 mm width\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emaximizes cabinet space efficiency, while the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ecolor-coded spring-clamp (cage clamp) terminals\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eenable fast, tool-free wiring.\u003c\/p\u003e\n\u003cp\u003eThe module is compatible with industrial network adapters supporting\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePROFINET, PROFIBUS, EtherCAT, and Modbus TCP\u003c\/strong\u003e, making it a flexible solution for distributed control systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eDetailed Technical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eST-1218\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e≤ 6 mA per channel @ 28.8V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e≤ 3 ms (OFF→ON) \/ ≤ 3 ms (ON→OFF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Current Consumption\u003c\/td\u003e\n\u003ctd\u003e35 mA @ 5.0V DC (System Power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003ePhotocoupler isolation (I\/O to logic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Method\u003c\/td\u003e\n\u003ctd\u003e2-wire or 3-wire sensor support; Cage clamp terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W × H × D)\u003c\/td\u003e\n\u003ctd\u003e12 mm × 99 mm × 70 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.45kg\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to +55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eIndustrial Application Scenarios\u003c\/h3\u003e\n\u003cp\u003eThe ST-1218 is widely used in:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eAutomotive assembly systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePackaging machinery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater and wastewater treatment plants\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaterial handling systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompact remote I\/O panels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts slim 12 mm form factor makes it particularly suitable for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003espace-constrained DIN-rail installations\u003c\/strong\u003e, providing reliable status feedback for safety interlocks, sensor arrays, and operator interface signals.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Is the ST-1218 compatible with the newer PACSystems RSTi-EP series?\u003c\/strong\u003e\u003cbr\u003eNo. The ST-1218 belongs to the standard RSTi (FnIO S-Series) platform and uses different bus connectors compared to the RSTi-EP series. Always verify slice compatibility with your selected network adapter before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Does the module require a separate power supply for field sensors?\u003c\/strong\u003e\u003cbr\u003eYes. The ST-1218 requires 24V DC field power, supplied either via the network adapter or through a dedicated power feed module, to energize connected input devices.\u003c\/p\u003e","brand":"GE Fanuc","offers":[{"title":"Default Title","offer_id":48746788290812,"sku":"ST-1218","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/ST-1218.jpg?v=1771917984","url":"https:\/\/www.electronicplc.com\/products\/emerson-st-1218-8-point-digital-input-module","provider":"Electronic PLC","version":"1.0","type":"link"}