{"product_id":"siemens-6es7321-1bl00-0aa0-simatic-plc-6es73211bl000aa0","title":"Siemens 6ES7321-1BL00-0AA0 SIMATIC PLC 6ES73211BL000AA0","description":"\u003ch3 data-section-id=\"nq8ynu\" data-start=\"0\" data-end=\"18\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"19\" data-end=\"522\"\u003eThe \u003ca href=\"https:\/\/plgautomation.com\/collections\/siemens\"\u003eSiemens \u003c\/a\u003e6ES7321‑1BL00‑0AA0 SIMATIC \u003ca href=\"https:\/\/plgautomation.com\/collections\/plcs-more\"\u003ePLC\u003c\/a\u003e Module is a digital input signal interface used in SIMATIC S7‑300 automation systems to receive and process discrete 24 V DC field inputs. Installed in industrial control panels, machine automation racks, and distributed control systems where reliable acquisition of discrete input signals is required. Maintenance teams and system integrators use this module for replacement, retrofit, and system expansion to ensure accurate input detection and processing.\u003c\/p\u003e\n\u003ch3 data-section-id=\"plkbhx\" data-start=\"524\" data-end=\"543\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"544\" data-end=\"1030\"\u003eThe Siemens 6ES7321‑1BL00‑0AA0 module is used in industrial automation to interface sensors, switches, pushbuttons, and safety devices with PLC logic. It is deployed in manufacturing lines, conveyors, packaging systems, material handling equipment, and process plants to capture and transmit 24 V DC input signals representing field device states to the controller. The module supports basic discrete input acquisition for control sequencing, status monitoring, and safety interlocks.\u003c\/p\u003e\n\u003ch3 data-section-id=\"68ulmp\" data-start=\"1032\" data-end=\"1063\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1064\" data-end=\"1695\"\u003e• Manufacturer: Siemens\u003cbr data-start=\"1087\" data-end=\"1090\"\u003e• Model \/ Part Number: 6ES7321‑1BL00‑0AA0\u003cbr data-start=\"1131\" data-end=\"1134\"\u003e• Product Type: Digital Input Module (SM 321)\u003cbr data-start=\"1179\" data-end=\"1182\"\u003e• PLC Platform: SIMATIC S7‑300\u003cbr data-start=\"1212\" data-end=\"1215\"\u003e• Number of Inputs: 8 discrete digital inputs\u003cbr data-start=\"1260\" data-end=\"1263\"\u003e• Input Voltage: 24 V DC\u003cbr data-start=\"1287\" data-end=\"1290\"\u003e• Input Type: Positive logic (PNP)\u003cbr data-start=\"1324\" data-end=\"1327\"\u003e• Input Current: ~3 mA per channel\u003cbr data-start=\"1361\" data-end=\"1364\"\u003e• Response Time: Standard industrial digital input response\u003cbr data-start=\"1423\" data-end=\"1426\"\u003e• Indicators: LED status per input channel\u003cbr data-start=\"1468\" data-end=\"1471\"\u003e• Mounting: PB‑bus rack installation in S7‑300 system\u003cbr data-start=\"1524\" data-end=\"1527\"\u003e• Protection Rating: IP20 (module housing)\u003cbr data-start=\"1569\" data-end=\"1572\"\u003e• Operating Temperature: Industrial specification range\u003cbr data-start=\"1627\" data-end=\"1630\"\u003e• Application: Discrete field input acquisition for PLC control\u003c\/p\u003e\n\u003ch3 data-section-id=\"1ln9bp8\" data-start=\"1697\" data-end=\"1723\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"1724\" data-end=\"1835\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Siemens 6ES7‑321‑1BL01‑0AA0\u003cbr data-start=\"1753\" data-end=\"1756\"\u003e• Siemens \u003ca href=\"https:\/\/plgautomation.com\/products\/siemens-output-module-6es7-322-1bl00-0aa0-6es7322-1bl00-0aa0?_pos=3\u0026amp;_sid=69e87de0e\u0026amp;_ss=r\"\u003e6ES7‑322‑1BL00‑0AA0\u003c\/a\u003e\u003cbr data-start=\"1785\" data-end=\"1788\"\u003e• Allen‑Bradley 1756‑I16SI\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"New","offer_id":51711864930606,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/5.webp?v=1774403194","url":"https:\/\/plgautomation.com\/products\/siemens-6es7321-1bl00-0aa0-simatic-plc-6es73211bl000aa0","provider":"PLG Automation ","version":"1.0","type":"link"}