{"product_id":"siemens-6es7321-1bh10-0aa0-programmable-logic-controller-module","title":"Siemens 6ES7321-1BH10-0AA0 Programmable Logic Controller Module","description":"\u003cdiv\u003e\u003cp\u003eSiemens 6ES7321-1BH10-0AA0 is a SIMATIC S7-300 digital input module (SM 321) that provides 16 isolated DC 24 V inputs for direct connection to field sensors on an S7-300 backplane. This high-speed input module uses a single 20-pole backplane connector and delivers an input delay of 0.05 ms per channel, enabling rapid state changes to be read by the PLC. Each of the 16 channels accepts a DC signal with a nominal 24 V value and recognizes 0 and 1 per IEC 61131: a logic 0 within -30 to +5 V and a logic 1 within 13 to 30 V; typical input current at the 1 level is about 7 mA. The module draws from the backplane's 5 V supply (up to 110 mA) and has a typical power loss of around 3.8 W, with isolation between the input circuitry and the backplane to protect the controller from field-side transients. Commonly used in automation projects to digitize sensor and switch signals for the S7-300 family, this part is catalogued as an Ersatzteil (spare part) for SIMATIC S7-300 and Siemens lists it as obsolete since October 1, 2023. \u003c\/p\u003e\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"New Surplus No Box","offer_id":46268585902314,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-018.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/siemens-6es7321-1bh10-0aa0-programmable-logic-controller-module","provider":"GTG Hardware","version":"1.0","type":"link"}