AS-i gateways with fail-safe PLC are industrial automation solutions primarily offered by German companies like Bihl+Wiedemann GmbH and Siemens. These products serve industries such as manufacturing, automotive, and logistics, providing robust communication between AS-Interface (AS-i) networks and higher-level PLC systems. Key features include fail-safe operation, real-time monitoring, and seamless integration with safety protocols. Bihl+Wiedemann specializes in AS-i technology, while Siemens combines PLC and gateway functionalities for comprehensive automation. These solutions enhance machine safety and efficiency in harsh industrial environments.