Siemens 6ES7143-4BF50-0AA0 SIMATIC ET 200pro EM 4DI/4DO DC24V/0.5A Remote I/O Module

The Siemens 6ES7143-4BF50-0AA0 is a SIMATIC ET 200pro electronic module with 4 digital inputs and 4 digital outputs, rated 24 V DC. Each output switches up to 0.5 A with electronic short-circuit protection per channel, and the module reports diagnostic status back to the controller. It mounts on the ET 200pro bus module and requires a separate connection module (6ES7194-4..00-0AA0).

Technical Specifications

Selection Notes

This module pairs 4 inputs with 4 outputs on one channel block, useful when a station needs a small balanced I/O count instead of a dedicated 8-channel input or output card. The 0.5 A per-output rating and 2 A module-wide ceiling set the limit for how many loads run at once across the four outputs; heavier loads need a load relay ahead of the channel. Diagnostics report at module level, so it suits lamp, solenoid and valve-pilot outputs more than channels needing individually reported wire-break status.

Applications

Fits ET 200pro stations needing a small balanced digital I/O block, such as one interlock circuit with a few pilot-lamp or valve outputs and matching feedback inputs. The 24 V DC P-reading (sourcing) inputs match standard European 24 V field wiring without added signal conditioning.