Using fieldbus repeaters for PROFIBUS and RS-485 bus systems, you can extend your network over a wide area regardless of the data rate. Even the number of devices can be extended through segmentation with repeaters. You can increase the range, transmit without EMI, and extend and distribute channels as required. The modular concept supports any combination of copper and FO channels. Using the serial interface converters, serial interfaces such as RS-232, RS-485, RS-422, and TTY can be converted from and to these formats in order to connect different devices.