{"product_id":"siemens-6es7321-1bh01-0aa0-simatic-s7-300-digital-input-module","title":"Siemens 6ES7321-1BH01-0AA0 SIMATIC S7-300 Digital Input Module","description":"\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #2d3748; padding-bottom: 8px; margin-top: 20px;\"\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748;\"\u003eThe Siemens 6ES7321-1BH01-0AA0 is a digital input module designed for the SIMATIC S7-300 PLC system. This module provides \u003cstrong\u003e16 optically isolated input channels\u003c\/strong\u003e for reliable signal acquisition from field devices operating at \u003cstrong\u003e24V DC\u003c\/strong\u003e. It is engineered to interface with sensors, switches, and other discrete signal sources in industrial automation environments. The module's optical isolation protects the PLC backplane from electrical disturbances and ground loops originating in field wiring, enhancing overall system stability and safety. Its compact, high-density design conserves valuable control cabinet space while a single 20-pin connector simplifies wiring and installation.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #2d3748; padding-bottom: 8px; margin-top: 30px;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0;\"\u003e\n  \u003cli\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 5px; height: 8px; width: 8px; background-color: #2b6cb0;\"\u003e\u003c\/span\u003e\n    16 digital input channels\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 5px; height: 8px; width: 8px; background-color: #2b6cb0;\"\u003e\u003c\/span\u003e\n    Rated input voltage of 24V DC\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 5px; height: 8px; width: 8px; background-color: #2b6cb0;\"\u003e\u003c\/span\u003e\n    Optical isolation between field and logic circuits\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 5px; height: 8px; width: 8px; background-color: #2b6cb0;\"\u003e\u003c\/span\u003e\n    Compatible with the Siemens SIMATIC S7-300 series\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 5px; height: 8px; width: 8px; background-color: #2b6cb0;\"\u003e\u003c\/span\u003e\n    Single 20-pin front connector for simplified wiring\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #2d3748; padding-bottom: 8px; margin-top: 30px;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0;\"\u003e\n  \u003cli\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 5px; height: 8px; width: 8px; background-color: #2b6cb0;\"\u003e\u003c\/span\u003e\n    Manufacturing and assembly lines\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 5px; height: 8px; width: 8px; background-color: #2b6cb0;\"\u003e\u003c\/span\u003e\n    Conveyor and material handling systems\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 5px; height: 8px; width: 8px; background-color: #2b6cb0;\"\u003e\u003c\/span\u003e\n    Packaging and bottling machinery\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 5px; height: 8px; width: 8px; background-color: #2b6cb0;\"\u003e\u003c\/span\u003e\n    Process control signal acquisition\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #2d3748; padding-bottom: 8px; margin-top: 30px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n  \u003ctable style=\"width: 100%; border-collapse: collapse; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border: 1px solid #ddd; padding: 10px; text-align: left; background-color: #f7fafc;\"\u003eSpecification\u003c\/th\u003e\n        \u003cth style=\"border: 1px solid #ddd; padding: 10px; text-align: left; background-color: #f7fafc;\"\u003eValue\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eSiemens\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e6ES7321-1BH01-0AA0\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eProduct Family\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eSIMATIC S7-300\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eModule Type\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eDigital Input Module\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eNumber of Inputs\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e16\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eInput Voltage\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e24V DC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eIsolation\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eOptically Isolated\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eConnector Type\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e20-pin\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eLifecycle Status\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eActive\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eGermany\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eHS Code\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e8537101190\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eShipping Weight\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e0.24 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e12.5 x 10.5 x 4.0 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #2d3748; padding-bottom: 8px; margin-top: 30px;\"\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 5px solid #c53030; padding: 15px; margin-bottom: 20px;\"\u003e\n  \u003cstrong style=\"color: #c53030;\"\u003eCRITICAL WARNING:\u003c\/strong\u003e Hazardous voltages may be present. Installation must be performed by qualified personnel only. Failure to de-energize equipment before installation can result in severe injury or death. Always follow local Lockout\/Tagout (LOTO) procedures.\n\u003c\/div\u003e\n\u003col style=\"list-style: none; padding-left: 0; counter-reset: step-counter;\"\u003e\n  \u003cli style=\"color: #2d3748; margin-bottom: 15px; position: relative; padding-left: 40px; line-height: 1.6;\"\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 0; display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; background-color: #2b6cb0; color: #fff; border-radius: 50%; font-weight: bold; content: counter(step-counter); counter-increment: step-counter;\"\u003e1\u003c\/span\u003e\n    De-energize the S7-300 rack and verify the absence of voltage using a calibrated multimeter. Apply appropriate LOTO devices.\n  \u003c\/li\u003e\n  \u003cli style=\"color: #2d3748; margin-bottom: 15px; position: relative; padding-left: 40px; line-height: 1.6;\"\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 0; display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; background-color: #2b6cb0; color: #fff; border-radius: 50%; font-weight: bold; content: counter(step-counter); counter-increment: step-counter;\"\u003e2\u003c\/span\u003e\n    Select an available slot on the S7-300 backplane. Align the module with the backplane bus connectors and press firmly until it is securely seated.\n  \u003c\/li\u003e\n  \u003cli style=\"color: #2d3748; margin-bottom: 15px; position: relative; padding-left: 40px; line-height: 1.6;\"\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 0; display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; background-color: #2b6cb0; color: #fff; border-radius: 50%; font-weight: bold; content: counter(step-counter); counter-increment: step-counter;\"\u003e3\u003c\/span\u003e\n    Secure the module to the DIN rail by tightening the integrated mounting screw located on the front of the module. Do not overtighten.\n  \u003c\/li\u003e\n  \u003cli style=\"color: #2d3748; margin-bottom: 15px; position: relative; padding-left: 40px; line-height: 1.6;\"\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 0; display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; background-color: #2b6cb0; color: #fff; border-radius: 50%; font-weight: bold; content: counter(step-counter); counter-increment: step-counter;\"\u003e4\u003c\/span\u003e\n    Prepare and terminate field wiring onto the 20-pin front connector according to the system wiring diagrams. Ensure proper wire gauge and ferrule usage.\n  \u003c\/li\u003e\n  \u003cli style=\"color: #2d3748; margin-bottom: 15px; position: relative; padding-left: 40px; line-height: 1.6;\"\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 0; display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; background-color: #2b6cb0; color: #fff; border-radius: 50%; font-weight: bold; content: counter(step-counter); counter-increment: step-counter;\"\u003e5\u003c\/span\u003e\n    Plug the front connector into the module, ensuring it is fully seated and secured by its locking mechanism.\n  \u003c\/li\u003e\n  \u003cli style=\"color: #2d3748; margin-bottom: 15px; position: relative; padding-left: 40px; line-height: 1.6;\"\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 0; display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; background-color: #2b6cb0; color: #fff; border-radius: 50%; font-weight: bold; content: counter(step-counter); counter-increment: step-counter;\"\u003e6\u003c\/span\u003e\n    After verifying all connections are correct and secure, remove LOTO devices and re-energize the system for commissioning.\n  \u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":52695211540843,"sku":"6ES7321-1BH01-0AA0","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/siemens-6es7321-1bh01-0aa0-digital-input-module-2avf0z0rgm3_6d4b0f41-29c0-45b7-a2f9-4c251aec9fd1.jpg?v=1766130847","url":"https:\/\/www.plcprotech.com\/fr\/products\/siemens-6es7321-1bh01-0aa0-simatic-s7-300-digital-input-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}