SIMATIC S7-1200 Analog Input SB 1231 1 AI 6ES72314HA300XB0

The SIMATIC S7‑1200 SB 1231 (6ES7231‑4HA30‑0XB0) is a compact yet powerful single-channel analog input module designed for high-precision measurement and conversion within the S7‑1200 PLC system. Supporting either 0–10 V or 0–20 mA signal types, this module is ideal for interfacing with a wide range of sensors—such as proximity switches, pressure transducers, and environmental probes—in industrial, building automation, or energy systems.

With 16-bit resolution, the SB 1231 provides accurate and stable analog data acquisition, ensuring reliable performance even in noise-prone factory environments. It features integrated diagnostics for detection of wire breaks or signal faults and includes clear LED indicators for easy troubleshooting and maintenance. The slim form-factor allows seamless DIN-rail mounting and enables modular expansion alongside other S7‑1200 modules.

Configuration and parameterization are handled directly within TIA Portal, allowing engineers to quickly assign input ranges, scale measurements, and define error thresholds. This enables consistent, real-time operation and integration with the PLC’s control logic via PROFINET, without requiring additional wiring or signal conditioning.

Supplied by Scalar Automation in Kenya, the SB 1231 single-analog-input module offers an efficient, precise, and scalable option for system integrators and automation engineers upgrading or expanding measurement capacity within compact S7‑1200 installations.

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