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The product identified as Siemens 6ES7131-4BB01-0AA0 is a Digital Input Module in the Simatic S7 hardware family.
Within the process-control arrangement, this class of module brings discrete field status into the control system. Typical signal sources include switches, relay contacts, permissives, and equipment-status circuits when they match the module's electrical requirements. Installation should follow the control node's approved hardware records.
SIMATIC S7 integrates programmable control, modular I/O, and industrial communication functions. This product belongs to the PLC modules layer of the installed S7 automation solution. The system's documented hardware assignment should guide placement.
Country of origin is listed as China.
Product phase out started by Siemens 10.01.2020
SIEMENS SIMATIC DP electronic module for ET 200S, 2 DI Standard 24 VDC, 15 mm width
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