The 2500-RBC Profibus Remote Base Controller (RBC) allows a CTI 2500 Series® or Simatic® 505 I/O base to function as a slave node on a DP I/O channel that complies with the PROFIBUS standard. The Remote Base Controller is a direct replacement for the Siemens® 505-6870 RBC. Note that the 2500-RBC does not provide for programming the PLC over its serial port.

The 2500-RIO-A RS485 Remote Base Controller allows control of a remotely-located CTI 2500 Series® or Simatic® 505 I/O base over a twisted-pair RS485 cable up to 1000m from the CPU. IMPORTANT NOTE: 2500-RIO-A HAS BEEN MATURED. IT IS REPLACED BY 2500-RIO-B, WHICH SHOULD BE USED ON ALL NEW DESIGNS.

The 2500-RIO-B RS485 Remote Base Controller allows control of a remotely-located CTI 2500 Series® or Simatic® 505 I/O base over a twisted-pair RS485 cable up to 1000m from the CPU.

CTI 2500-TAP RS-485 network taps can be used for construction a remote I/O network. These taps use an impedance-controlled design for highest noise immunity and include built-in termination resistance which can be easily switched in- or out- of the circuit using a toggle switch. They also include an electrical noise bleed path to chassis ground which can improve the noise immunity of your network.