Siemens 6ES5-421-8MA12 Input Module

Product manual:

Siemens 6ES5-421-8MA12 is a digital input module in the Siemens S5 series PLC system, used to receive and process binary signals from field devices, such as buttons, switches, or other digital sensor signals. It is commonly used in industrial automation control systems to achieve signal acquisition and transmission.
Main features:
Module type: Digital input module
Input points: 32 points
Input type: DC 24V signal
Purpose: To receive digital signals from external devices such as buttons, switches, and sensors, and transmit these signals to the PLC system for processing
Compatibility: Compatible with the central processing unit (CPU) of Siemens S5 series
Installation: Standard S5 series rack installation, supporting various applications in industrial automation environments
Application scenarios:
Production line automation: suitable for collecting status signals from machines or operators, such as detecting status changes during the production process.
Process control: used for monitoring and controlling various industrial processes, suitable for manufacturing, energy, chemical and other fields.

Product details picture:

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