The Texas Instruments 505-6851A (also commonly branded as the Siemens SIMATIC TI505 505-6851A) is a Remote Base Controller (RBC) module used in legacy industrial automation systems.
Technical Specifications & Purpose
- Core Function: It functions as an I/O adapter that allows a main programmable logic controller (PLC)—such as the TI545, TI555, or TI575—to communicate over long distances with inputs and outputs located in remote chassis/bases.
- Network Media: This specific version utilizes a twisted-pair (RS-485) connection.
- Distance Capabilities: It supports system communication distances up to 1,000 meters (3,300 feet) from the local PLC base.
- System Lineage: Originally manufactured by Texas Instruments, this product line was later acquired and supported by Siemens under the SIMATIC TI505 umbrella.