{"product_id":"siemens-simatic-s7-300-digital-input-sm-321-optically-isolated-16-6es7321-1fh00-0aa0","title":"Siemens SIMATIC S7-300, DIGITAL INPUT SM 321, OPTICALLY ISOLATED 16 6ES7321-1FH00-0AA0","description":"\u003cp\u003e\u003cstrong\u003eSiemens SIMATIC S7-300 Digital Input Module SM 321, Optically Isolated, 16 DI, 6ES7321-1FH00-0AA0\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Siemens SIMATIC S7-300 Digital Input Module SM 321, Optically Isolated, 16 DI, 6ES7321-1FH00-0AA0 is a reliable and high-performance input module designed for industrial automation and process control applications. Engineered for seamless integration with Siemens S7-300 PLC systems, this module provides 16 optically isolated digital inputs for safe and accurate signal acquisition from field devices such as sensors, switches, limit switches, and control circuits. With its robust Siemens engineering, strong electrical isolation, and stable signal processing, the 6ES7321-1FH00-0AA0 ensures dependable operation in demanding industrial environments where precision and reliability are essential.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eProvides 16 optically isolated digital inputs for safe and reliable signal acquisition.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for seamless integration with Siemens SIMATIC S7-300 PLC systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnsures high noise immunity and electrical isolation for stable industrial operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSuitable for interfacing with sensors, switches, and field-level control devices.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBuilt with Siemens industrial-grade quality for long-term durability and performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eBrand: Siemens\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProduct Series: SIMATIC S7-300\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProduct Type: Digital Input Module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eModel: SM 321\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eManufacturer Part Number: 6ES7321-1FH00-0AA0\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNumber of Inputs: 16 Digital Inputs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInput Type: Optically Isolated\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVoltage Rating: Industrial DC input (typical 24 V DC systems)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApplication: Industrial automation, machine control, process monitoring, and PLC input systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatibility: Siemens SIMATIC S7-300 controllers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMounting Type: PLC rack module installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConstruction: Rugged industrial-grade module for control cabinet integration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Siemens SIMATIC S7-300 SM 321 Digital Input Module 6ES7321-1FH00-0AA0 delivers dependable signal acquisition, strong electrical isolation, and reliable performance for industrial automation systems. Backed by Siemens’ global reputation for engineering excellence, this module ensures stable operation, accurate input handling, and long service life. Ram Automations supplies genuine Siemens automation products for industrial control applications. For pricing, availability, or technical support, contact \u003cstrong\u003e\u003ca href=\"mailto:info@ramautomations.com\"\u003einfo@ramautomations.com\u003c\/a\u003e.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Ram Automations","offers":[{"title":"Default Title","offer_id":54413635486038,"sku":"RAMA100023924","price":999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/5554\/5686\/files\/Siemens_SIMATIC_S7-300_DIGITAL_INPUT_SM_321_OPTICALLY_ISOLATED_16_6ES7321-1FH00-0AA0.webp?v=1783069900","url":"https:\/\/ramautomations.com\/products\/siemens-simatic-s7-300-digital-input-sm-321-optically-isolated-16-6es7321-1fh00-0aa0","provider":"Ram Automations","version":"1.0","type":"link"}