Siemens 500-2114A Remote Base Controller

Siemens 500-2114A Remote Base Controller is a factory-refurbished Remote Base Controller (RBC) that serves as the interface between Siemens 500-series I/O bases and Texas Instruments PLCs, enabling remote I/O expansion in older control systems. This RBC typically ships with an RF modem for wireless communication to remote bases and field devices, a feature you’ll find referenced in product listings for this model. It is part of the Siemens TI family used with TI 545/555 CPUs, and Siemens manuals specifically list 500-2114A alongside TI505-6850-A as supported RBC options. The RBC typically interfaces over RS-485/RF I/O channels to connect remote I/O bases to the host controller, per documentation describing PPX:500–2114A and its RS-485/RF I/O channel converter. Some CTI installations document attaching a 500-2114A RBC to the CTI 2500 controller to enable communication with a 500-series I/O network. These legacy RBC units are kept in circulation by refurbishers and used in environments that require authentic Siemens TI RBC hardware rather than modern substitutes.