Siemens 6GK7 443-5DX04-0XE0 Profibus Communication Module

The CP 443-5 Extended Communications Processor, 6GK7443-5DX04-0XE0, is a compact PROFIBUS DP interface module designed to connect SIMATIC S7-400 controllers to a PROFIBUS DP network. As a PROFIBUS DP master with Sync/Freeze support and S7 communication, it handles high-speed data exchange on PROFIBUS DP up to 12 Mbit/s and supports FMS-style services along with SEND-RECEIVE communication for process data transfer. This single-width CP module fits the S7-400 family and maintains S5 compatibility, enabling PG/OP access and seamless integration of PROFIBUS devices, remote I/O, and field devices within the same bus. The module’s DP master capability is intended for controlling and coordinating PROFIBUS DP devices, providing deterministic communication and compatible functions for typical automation architectures that include CPU/S7 controllers, DP peripherals, and field devices. The part number 6GK7443-5DX04-0XE0 confirms the DX04 hardware revision, and Siemens Industry Mall lists this model as a compact, single-width CP for S7-400 with PROFIBUS DP connectivity. Common applications include upgrading older S5/S7 systems to PROFIBUS DP networks, linking S7-400 CPUs with DP slaves, and enabling programmatic data exchange between PLCs, HMIs, and other DP devices in industrial automation environments.