{"product_id":"ge-st-1218-digital-input-module","title":"GE ST-1218 Digital Input Module","description":"\u003cp\u003eConfigured for distributed signal acquisition and discrete state verification in industrial automation systems, the \u003cstrong\u003eGE ST-1218\u003c\/strong\u003e (\u003cstrong\u003eST-1218\u003c\/strong\u003e Digital Input Module) provides direct physical\/electrical execution. It interfaces external discrete field loops directly onto the Ethernet-based RSTi network infrastructure natively at the hardware tier to maintain continuous state registry parallel to master processing bus execution cycles.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eST-1218\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGE (General Electric)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12 mm x 99 mm x 70 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDigital Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Density\u003c\/td\u003e\n\u003ctd\u003e8 positive logic input channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperational Input Voltage\u003c\/td\u003e\n\u003ctd\u003e12-24 VDC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Profile\u003c\/td\u003e\n\u003ctd\u003eDIN-rail mounting configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003eRSTi Series Distributed I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eFollows standard RSTi backplane bus current ratings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control \u0026amp; Drive Processing Architecture\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEtherNet\/IP Deterministic Networks and Bus Integration:\u003c\/strong\u003e The ST-1218 communicates over the backplane bus using high-speed, Ethernet-based RSTi network protocols. Discrete status changes at the input screw terminals are digitized and mapped directly into host controller input image tables within fixed millisecond network update cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling and Slim Cabinet Footprint:\u003c\/strong\u003e Featuring a 12 mm slim form factor, the module enables high-density vertical I\/O stacking inside space-constrained marshaling enclosures. The 8-channel positive logic layout handles multiple field sensors across a compact DIN-rail segment without overloading panel infrastructure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware Flash Compatibility and Input Logic Profiles:\u003c\/strong\u003e Onboard digital filtering circuitry conditions incoming 12-24 VDC binary signal transitions, suppressing high-frequency mechanical switch bounce or inductive electrical noise. The logic profiles interface seamlessly with system execution baselines, remaining stable during standard firmware flash updates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What specific hardware behaviors manifest if a 12-24 VDC field input loop experiences a reverse polarity connection at the ST-1218 terminal block?\u003c\/p\u003e\n\u003cp\u003eA: The module utilizes positive logic (source) input architecture. If a reverse polarity condition occurs, the internal optical coupling diodes block the reverse current path, preventing damage to the internal logic rail while keeping the affected channel in a safe, de-energized \"0\" state.\u003c\/p\u003e\n\u003cp\u003eQ: Can this 0.7 kg RSTi module be hot-swapped or removed from the DIN-rail assembly while the active slice bus is carrying power?\u003c\/p\u003e\n\u003cp\u003eA: No. Removing a slice module while the backplane bus is energized can interrupt the internal data communication lines, corrupting the serial frame transmission to downstream I\/O units and causing the network interface adapter to trip a bus exception fault.\u003c\/p\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":47705119686846,"sku":"ST-1218","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-06-24_09-54-23_5fbd50c9-a6f4-4a92-8ee6-55a1f6137f3f.png?v=1782268855","url":"https:\/\/www.autooiltech.com\/ar\/products\/ge-st-1218-digital-input-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}