The Siemens 6AG1138-4DD01-7AB0 is a SIPLUS variant of the SIMATIC ET 200SP digital module, combining 2 digital inputs and 2 digital outputs in a single 15 mm-wide housing. It operates at 24 V DC nominal with a rated output current of 2 A per channel. 2-wire sensor support is built in, along with short-circuit and reverse polarity protection, reducing external wiring and component count on the rail.
Integration
Panel space: 15 mm wide, 52 mm deep, 81 mm high — one of the slimmest ET 200SP modules for dense IO layouts. The module accepts unshielded cable runs up to 600 m and shielded up to 1 000 m, with input voltage thresholds at -30 to +5 V for signal '0' and +11 to +30 V for signal '1'. Outputs switch resistive loads at up to 5 kHz or lamp loads at 10 Hz; inductive loads are limited to 2 Hz. A minimum pulse duration of 100 µs is required for reliable program reactions. Electrical isolation tested at 500 V DC between channels and the backplane bus. Status indicators (green LEDs) for both inputs and outputs provide live diagnostic feedback without a separate software tool.