Schneider Electric AS-HDTA-201 Programmable Logic Controller Rack

The Schneider Electric AS-HDTA-201 is a secondary subrack (backplane) for Modicon 984-series Compact PLCs that expands a PLC rack’s module capacity. As a five-slot backplane, the AS-HDTA-201 provides space for up to five additional PLC modules in a single expansion, enabling more I/O channels without replacing the primary rack. The unit is listed under the Schneider Electric Modicon line as ASHDTA201, with distributor listings noting a compact weight of about 0.50 kg. Designed to host additional modules in a Modicon 984 system, the AS-HDTA-201 is commonly used as the second rack in a modular expansion alongside the primary AS-HDTA-200. Typical applications include expanding automation rack configurations in industrial environments where more I/O functionality is required while maintaining a compact footprint. This accessory is part of Schneider Electric’s Modicon 984 Compact PLC family to create scalable rack configurations for broader control and monitoring capabilities.