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SCADA to PLC communication over VPN
Hardware required for SCADA to PLC communications over secured VPN

Hi,

I am trying to communicate Cimplicity/Ifix SCADA with Remote PLCs over a secured VPN network. Protocol would be preferably Modbus TC/IP. I have the following questions.

1.What additional hardware (VPN routers/switches) might be required?

2.Is it required to dial VPN connection every time to connect to PLC?

Thanks
Hussain

Hi, I have done similar projects using GSM modems, look at the MOXA G3150. If you need any more info about this, let me know.

Kevin