Siemens 6ES7223-1PH30-0XB0 Profibus DP Interface

Siemens 6ES7223-1PH30-0XB0 is the SIMATIC SM1223 I/O module that provides eight digital inputs (DI) and eight relay outputs (DO) with a PROFIBUS DP interface for SIMATIC S7-1200 systems. As a PROFIBUS DP slave, it enables remote I/O expansion on a DP network, connecting to PLCs via a standard PROFIBUS DP bus. The DI channels accept 24 VDC signals and the DO channels drive relay contacts, enabling direct control of actuators or interlock devices within the 24 V DC domain of the system. This module integrates with Siemens engineering workflows (STEP 7 / TIA Portal) and is designed to be used within the SIMATIC modular I/O family, allowing straightforward address assignment and mapping in ladder logic or function block diagrams. Typical applications include machine automation tasks requiring additional sensor inputs and relay-driven actuator outputs, such as conveyor controls, valve actuation, pushbuttons, and safety interlocks in PROFIBUS DP networks.