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For Simatic S7 system applications, Siemens 6ES7431-7QH00-0AB0 provides the function of an Analog Input Module.
For replacement planning, digital input hardware creates the path from field-level status signals to control logic, allowing the system to evaluate operating conditions and respond through configured sequences or protective actions. The original wiring and configuration records should guide application.
Within an S7 installation, the exact hardware order number determines supported interfaces and configuration behavior. System and software compatibility should be checked before replacement. The product should be matched to the documented control-system position.
Country of origin is listed as Germany.
In the signal path, this approach helps preserve the intended system function while keeping selection aligned with the documented ratings, capacity, and compatibility requirements. Service decisions should reflect the configured signal and control function.
Active Product 05.11.2021
SIEMENS SIMATIC S7-400 analog input SM 431, isolated 16 AI; resolution 16 bit, U/I/Resistor/Thermocouple/Pt100 , alarm, diagnostics
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