Industrial serial networks communicate with master systems through serial ports. If we want to have a remote control for this type of applications, we can use RS232-RS485 converters. This solution limits the distance of the link to 1.2 km. Further so, these communications don’t have high speed because it is difficult to control the E/R amplifiers of the converter. We can accomplish remote control and monitor without these limitations using the possibility to transmit information over Ethernet networks (LAN, WLAN and WAN).In the paper we use virtual ports and a bi-directional Serial-Ethernet Redirector implemented in the computer and in the wireless Access Point like a client-server application, for control and monitor of a SCADA application with ARDETEM PECA 300 signal analyser.The software is transparent for the SCADA application and converts the communication protocol in UDP Datagram and vice-versa
