{"product_id":"6es7321-1bh02-0aa0-siemens-simatic-s7-300-datasheet-technical-manual","title":"6ES7321-1BH02-0AA0 Siemens SIMATIC S7-300 Datasheet \u0026 Technical Manual","description":"\u003ch2\u003eSiemens 6ES7321-1BH02-0AA0 SIMATIC S7-300 Digital Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSiemens 6ES7321-1BH02-0AA0\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSiemens 6ES7321-1BH02-0AA0\u003c\/strong\u003e Digital Input Module, operates as a dedicated hardware component for processing discrete 24 VDC sensor signals within SIMATIC S7-300 automation networks.\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\u003e6ES7321-1BH02-0AA0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.20 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e40 mm x 125 mm x 120 mm (Packaging: 12 cm x 4 cm x 12.5 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eMax 10 mA from 5 VDC backplane bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Type\u003c\/td\u003e\n\u003ctd\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e7 mA per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay\u003c\/td\u003e\n\u003ctd\u003e0.2 ms to 1.2 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eOptocoupler isolation; tested at 500 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired Front Connector\u003c\/td\u003e\n\u003ctd\u003e20-pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet\/IP Deterministic Networks and I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe 6ES7321-1BH02-0AA0 interfaces directly with the central processing unit or remote interface modules via the passive backplane bus assembly. This allows rapid data scanning synchronized across high-speed Profinet or PROFIBUS DP deterministic networks. It features a dense 16-channel layout that allows high-density I\/O scaling within a single 40 mm wide slot housing, optimizing enclosure real estate. To maintain execution consistency across modular racks, all internal logic gates adhere to strict firmware flash compatibility parameters governed by the parent processing unit.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 6ES7321-1BH02-0AA0 module require a 20-pin or a 40-pin front connector plug?\u003c\/p\u003e\n\u003cp\u003eA: This specific 16-channel digital input module requires a standard 20-pin front connector for field wiring terminations.\u003c\/p\u003e\n\u003cp\u003eQ: Is hot-swapping supported for this module during active PLC RUN operation?\u003c\/p\u003e\n\u003cp\u003eA: Hot-swapping (removal and insertion under voltage) is only supported if the 6ES7321-1BH02-0AA0 is seated on an active backplane bus module frame; standard DIN rail configurations require a full system power shutdown before replacement.\u003c\/p\u003e\n\u003cp\u003eQ: What is the isolation threshold between the field-side input channels and the internal backplane logic?\u003c\/p\u003e\n\u003cp\u003eA: The module relies on optocoupler circuits to establish complete galvanic isolation between the 24 VDC field signals and the 5 VDC backplane components, verified up to a test voltage of 500 V DC.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront Connector Installation:\u003c\/strong\u003e Wire the field switches to the 20-pin front connector before snapping the assembly onto the module housing. Fasten the retention bolt securely to prevent micro-disconnections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Shielding and Routing:\u003c\/strong\u003e Route all 24 VDC signal lines apart from high-voltage AC power lines within the wire ducts to eliminate electromagnetic interference. Shielded cables up to 200 m must be terminated at the earthing bar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN Rail Bonding:\u003c\/strong\u003e Ensure the S7-300 aluminum mounting rail is properly bonded to the cabinet functional earth (FE) plane using a low-impedance grounding cable to maintain effective noise suppression.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":43438473314394,"sku":"6ES7321-1BH02-0AA0","price":90.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/193._e9828295-68f8-4587-a442-aff0daa901fa.jpg?v=1780279030","url":"https:\/\/www.spareoil.com\/products\/6es7321-1bh02-0aa0-siemens-simatic-s7-300-datasheet-technical-manual","provider":"SpareOil Automation","version":"1.0","type":"link"}