Project Overview

• Lighting system on metro stations is normally controlled using a standalone controller. The controller supported 3^rd party integration using Telnet and it was required to control the lighting on the station using 3^rd party logic controllers and SCADA application.

Initial Situation

• Metro Station had lighting system connected to Lighting Controller.
• BMS was also located on the same site.
• Lighting Controller supports Telnet Protocol for 3^rd party integration
• BMS understands Modbus RTU Protocol.

Customer Requirement

• For monitoring and controlling the lighting system on a metro station, authority wanted to control the switching on and off the lights. BMS also helps in getting the status of the lights.
• Since the lighting controller works on Telnet and BMS understand Modbus RTU, a direct exchange of data between them is not possible.

Solution Provided

• On analyzing the situation, ProtoConvert has provided an effective solution.
• ProtoConvert Gateway suggested a Gateway which have 1xRS485 Port, 1xRS232 Port and 1xEthernet Port which understands Telnet and Modbus RTU Protocols.
• We connected Lighting Controller with our Gateway on RS485 Port and BMS on RS232 Port.
• We configured our Gateway such that it will fetch the data from controller and serve it to BMS on RS232 in Modbus RTU Protocol.

Result

• Using our own Telnet Simulator we got the data to our Gateway and with the ModScan tool we could successfully display the same date on BMS.

Keywords:

• Telnet Protocol
• Lighting controller 
• BMS (Building Monitoring System)
• SCADA
• Modbus RTU Protocol
• Lighting Control System Integration
• Lighting System
• Telnet Simulator