6ES7231-4HA30-0XB0 - Siemens SIMATIC S7-1200 Analog Input

The 6ES7231-4HA30-0XB0 is part of the SB 1231 analog input module family, supporting one analog channel that accepts either ±10 V DC voltage input or 0–20 mA current loop signals with 12-bit resolution. This flexibility allows engineers to connect a variety of sensors such as pressure transducers, level sensors, or analog transmitters directly to the PLC without external signal conditioning.

With a lightweight design of just 0.029 kg and compact dimensions of 5.20 x 8.00 x 2.90 cm, the module is ideal for use in tight spaces or where minimal panel footprint is critical. It integrates directly with the SIMATIC S7-1200 CPU as an add-on signal board and is supported under Siemens’ PM300: Active Product Lifecycle, ensuring long-term availability and service. Manufactured in China under Siemens’ global quality protocols, this PLC analog input module guarantees stable signal acquisition for real-time process monitoring.

Configuration and diagnostics are simplified via the TIA Portal, where engineers can set signal types, monitor values, and detect input faults. For full setup instructions and specifications, refer to the official Siemens datasheet for 6ES7231-4HA30-0XB0.

The Siemens 6ES7231-4HA30-0XB0 PLC is ideal for OEMs, panel designers, and maintenance engineers who need a reliable analog input interface for voltage or current signals within a space-constrained automation setup. It is commonly used to read data from analog pressure sensors, 4–20 mA transmitters, and control loop instruments in applications like HVAC control, tank level monitoring, and small process skids.

Its direct integration with the S7-1200 CPU allows engineers to eliminate extra wiring and external analog input modules, simplifying the panel design and reducing cost. For field technicians and junior automation engineers, the 6ES7231-4HA30-0XB0 offers intuitive setup, built-in diagnostics, and dependable performance even in electrically noisy environments.

This analog input signal board delivers accurate analog data capture without compromising on space or flexibility. Whether you're retrofitting older machines or building new smart automation panels, the Siemens 6ES7231-4HA30-0XB0 provides the accuracy, simplicity, and Siemens-grade reliability needed for efficient signal acquisition in modern PLC systems.