Title :
Software developments for modbus SCADA to extend distance to 2x for controlled devices
Author :
Tipsuwanporn, Vittaya ; Numsomran, A. ; Samaimak, S. ; Hamnarong, Sh
Author_Institution :
Dept. of Instrum. & Control Eng., King Mongkut´s Inst. of Technol. Ladkrabang, Bangkok, Thailand
Abstract :
Modbus protocol is a protocol that is widely used in SCADA systems. Because it is an open standard protocol. It can be programmed for communications in embedded devices easily. When using the Modbus protocol on RS-485 bus systems, the communication distance is limited to 1.2 km; typically a repeater is used to boost the signal to further the distance. This paper presents an OPC Server and Firmware update to increase the working distance of the control devices. The update is also compatible with existing standard devices as well.
Keywords :
SCADA systems; field buses; Modbus SCADA; Modbus protocol; OPC server; RS-485 bus system; communication distance; firmware update; open standard protocol; software development; Educational institutions; Servers; Standards; Modbus; OPC Server; RS-485; SCADA;
Conference_Titel :
Control, Automation and Systems (ICCAS), 2013 13th International Conference on
Conference_Location :
Gwangju
Print_ISBN :
978-89-93215-05-2
DOI :
10.1109/ICCAS.2013.6703939
