The RS2 communication converter has been designed for signal conversion between RS232 and RS485 / 422 communication interfaces. The two incorporated interfaces are galvanically isolated. The set of practical options provides for an ideal choice for any communication system demanding a reliable and trouble-free operation. The converter is equipped with automated detection of communication rate ADC (“AutoDirectionCircuitry”) on the side of the RS485 communication interface, significantly simplifying the system integration of the device, as the user no longer requires a program interface or any additional corrections and/or device settings after the installation in case the transmitting equipment is replaced. The RS232 communication interface is equipped with detection as well. The detection function identifies the type of final control device (data terminal, e.g. a computer): the user simply specifies on the RS2 converter whether the connected device is operating as a DTE (“Data Terminal Equipment”) unit or a DCE (“Data Circuit-Terminating Equipment”) unit. This eliminates the need for a crossover null model cable, standardising the use of unified connecting cables and removing the need for any additional interventions on the installations in case the polarisation of control unit is changed. RS485 supports the integration of up to 256 units into a common network, using the RS485 or RS422 communication protocol for information exchange. The RS2 converter supports all standard RS232 device communication rates (up to 116Kbps) and operates on a single voltage power supply.