Siemens 6GK1543-0AA00 Industrial Interface Module

Siemens 6GK1543-0AA00 is the CP5430 SINEC L2 interface module for SIMATIC S5 systems, functioning as a dedicated communications processor that connects an S5 PLC to a SINEC L2 network. It provides 1 PG interface and 1 SINEC L2 interface, enabling programming access and network communication through a single module within a SIMATIC NET architecture. Designed for integration into CP-based S5 configurations, the CP5430 sits in the communications slot of modular S5 systems and supports the standard SINEC L2 protocol stack to facilitate reliable data exchange between the S5 controller and other networked devices. Typical applications include linking an S5 controller to local or remote SINEC L2 networks for process data transfer, diagnostics, and interoperability with other SINEC devices in legacy installations, or retrofitting older plants that rely on S5 hardware while expanding network reach. The product’s Siemens part number is 6GK1543-0AA00; it is commonly referenced in supplier catalogs as the SINEC CP5430 interface for SIMATIC S5, underscoring its role as a bridge between classic S5 automation and modern industrial networks.