Recently ,I've been assigned to a project. I should prepare a PC based HMI for an old DCS system.It is TDC-300O and it is under the logo of YAMATAKE and HONEYWELL. I don't know anybody here is familiar with this issue or not, but there is a component named "LCI" which prepares a serial port connection for this DCS. Tags can be read or write to/from DCS using COM port of PC and a text based syntax( for example "$R 11201" means "Read tag number xxxx")
There are some ideas in my mind about how to do this project:
1-Implement all the softwares with Visual C++.I need several softwares.One for "connection via RS232", another for HMI functions like trend, archive, GUI...
2-Using (writing) a DDE Server and WinCC.
Connection to serial port will be achieved using an ActiveX which is imported inside DDE Server. Then all the read tags are available in WinCC using DDE connection
3-The third method is using an OPC server.I think this method is more industrial but I don't know how to implement an OPC Server then I think I do the project using second idea which is less time consuming than the first way.
Any comments?
There are some ideas in my mind about how to do this project:
1-Implement all the softwares with Visual C++.I need several softwares.One for "connection via RS232", another for HMI functions like trend, archive, GUI...
2-Using (writing) a DDE Server and WinCC.
Connection to serial port will be achieved using an ActiveX which is imported inside DDE Server. Then all the read tags are available in WinCC using DDE connection
3-The third method is using an OPC server.I think this method is more industrial but I don't know how to implement an OPC Server then I think I do the project using second idea which is less time consuming than the first way.
Any comments?