{"product_id":"siemens-6es5900-7aa11-programmable-logic-controller-module","title":"Siemens 6ES5900-7AA11 Programmable Logic Controller Module","description":"\u003cdiv\u003e\u003cp\u003eSiemens 6ES5900-7AA11 is a SIMATIC S5 CPU module classified as Central Unit 900 (Zentralbaubaugruppe 900) for the legacy S5 control system. The part number 6ES5900-7AA11 identifies a CPU 900 central unit used in S5-110A-based configurations, serving as the primary processor that executes the PLC program and coordinates communications within the S5 architecture. Verified supplier listings describe it as an exchange\/replacement central unit for the S5-110A family, underscoring its role as the central processing component of older Siemens automation installations. In typical S5-110A systems, this CPU module would pair with compatible I\/O and interface modules to form the complete control solution, making it a common choice for maintenance, retrofit, or repair of vintage Siemens S5 lines.\u003c\/p\u003e\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"New Surplus No Box","offer_id":46268518727914,"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-6es5900-7aa11-programmable-logic-controller-module","provider":"GTG Hardware","version":"1.0","type":"link"}