{"product_id":"plc-siemens-6es7321-1bh02-0aa0-6es7-321-1bh02-0aa0-s7-300-digital-input-sm-321","title":"PLC | Siemens | 6ES7321-1BH02-0AA0 6ES7 321-1BH02-0AA0  S7-300 Digital input SM 321","description":"\u003ch2\u003eProduct Description: Siemens 6ES7321-1BH02-0AA0\u003c\/h2\u003e\r\n\u003cp\u003eThe Siemens 6ES7321-1BH02-0AA0 is a digital input module from the SIMATIC S7-300 series, designed to interface up to 16 digital input signals at 24 V DC with electronic isolation. It is used for acquiring binary signals from sensors and switches in industrial automation environments. This module offers high reliability, easy installation, and direct integration into the modular S7-300 PLC platform.\u003c\/p\u003e\r\n\u003ch2\u003eKey Features\u003c\/h2\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e16 digital inputs at 24 V DC\u003c\/li\u003e\r\n\u003cli\u003eElectronically isolated input channels\u003c\/li\u003e\r\n\u003cli\u003eInput delay filtering and diagnostics\u003c\/li\u003e\r\n\u003cli\u003eLED indicators for input signal status\u003c\/li\u003e\r\n\u003cli\u003eStandard 40 mm width module\u003c\/li\u003e\r\n\u003cli\u003eSeamless integration with S7-300 CPU and backplane\u003c\/li\u003e\r\n\u003cli\u003eSuitable for sink or source signal wiring\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\n\u003cstrong\u003ePart Number\u003c\/strong\u003e: 6ES7321-1BH02-0AA0\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eNumber of Inputs\u003c\/strong\u003e: 16\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eInput Voltage\u003c\/strong\u003e: 24 V DC (rated)\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eInput Current\u003c\/strong\u003e: Approx. 7 mA per channel\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eInput Type\u003c\/strong\u003e: Sink\/source configurable\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eIsolation\u003c\/strong\u003e: Electrically isolated from the backplane bus\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eSignal Delay\u003c\/strong\u003e: Adjustable (default ~3 ms)\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eMounting Method\u003c\/strong\u003e: DIN rail (standard S7-300 rack)\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W × H × D)\u003c\/strong\u003e: 40 mm × 125 mm × 120 mm\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: Approx. 220 g\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eProtection Class\u003c\/strong\u003e: IP20\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e: 0 °C to +60 °C\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e: –40 °C to +70 °C\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eCertifications\u003c\/strong\u003e: CE, cULus, EAC\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2\u003eApplication Areas\u003c\/h2\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eDiscrete signal acquisition in industrial automation\u003c\/li\u003e\r\n\u003cli\u003eBinary input detection from pushbuttons, limit switches, and sensors\u003c\/li\u003e\r\n\u003cli\u003eProcess and factory control systems using S7-300 architecture\u003c\/li\u003e\r\n\u003cli\u003eModular PLC panels requiring digital input expansion\u003c\/li\u003e\r\n\u003cli\u003eAutomation systems with standard 24 V DC field wiring\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2\u003eAdvantages\u003c\/h2\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eReliable and noise-immune digital signal acquisition\u003c\/li\u003e\r\n\u003cli\u003eCompact 16-channel design reduces hardware footprint\u003c\/li\u003e\r\n\u003cli\u003eLED indicators enable fast on-site diagnostics\u003c\/li\u003e\r\n\u003cli\u003eCompatible with all S7-300 CPUs and racks\u003c\/li\u003e\r\n\u003cli\u003eRobust Siemens quality for long-term industrial performance\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Rabwellplc","offers":[{"title":"Default Title","offer_id":47070878892256,"sku":"07*6ES7321-1BH02-0AA0","price":51.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/1947\/9776\/files\/10_b18b64d9-d40c-49d8-a4b8-fc1f5f164e20.jpg?v=1740649838","url":"https:\/\/rabwellplc.com\/products\/plc-siemens-6es7321-1bh02-0aa0-6es7-321-1bh02-0aa0-s7-300-digital-input-sm-321","provider":"Rabwellplc","version":"1.0","type":"link"}