CS ROMANIA was and is involved in developing applications using and implementing various data communication protocols on PC, PLC and embedded platforms.

Examples of such protocols for embedded platforms (VxWorks, eCOS, embedded Linux, customer proprietary real time executives) are: HPTS (railway), ARINC 429 (avionics), HDLC/SDLC, NF-69010 (French protocol for railway communications), GPS NMEA, other customer and proprietary protocols used for equipment maintenance & testing.

For PLC and PC platforms (Linux and Windows) some protocols examples are: IEC 60870-5-101, IEC 60870-5-104 (master/slave), Modbus RTU, Modbus TCP, RP 570 (ABB), S7 400 (Siemens Simatic S7/M7, Industrial Ethernet), Client &Server OPC (OLE for Process Control) DA (Data Access) and AE (Alarms and Events), Client & Server for DDE (Dynamic Data Exchange), Rex (a CS ROMANIA proprietary protocol, master/slave, used with the CS ROMANIA proprietary RTOS Rexsys), Ironbus (a CS ROMANIA proprietary protocol used for SCADA communications, with a very low overhead).