Hi,

I’m trying to test the feasibility of using Sentrol SDK to implement an OPC Provider running as an NT Service.

Q1): Can example opc provider built using Sentrol be accessed remotely by an OPC Client?

I used the evaluation version of Sentrol to compile Project1.exe in “Tutorial_Lesson8_OPCProvider” and tested it on a VirtualBox Guest VM running on my laptop.

Using a OPC client launched from the Guest VM, I’m able to connect to “My.OPC” (Project1.exe), but if I try to connect a OPC client launched from my laptop (the VirtualBox Host) to My.OPC (remote connection), I get a “Server execution failed” error. I’ve disabled firewall, setup DCOM, and can connect the same OPC client to Prosys OPC Simulation Server which I installed on the same Guest VM.

Q2): Why would connecting a remote OPC client launch another process of the OPC Provider.

Then, it occurred to me that I might need to run Project1.exe first before connecting the remote client, however, that also didn’t work also. From Windows Task Manager, I can see 2 instances of Project1.exe running, so it appears that one of them has hung due to the evaluation prompt? Is it correct that 2 processes are generated or have I done anything wrongly?

How can I evaluate a Sentrol built OPC Provider? Also, is it correct that 2 Project1.exe runtime is created for a local and a remote connection?

How would it work if the OPC Provider is implemented as an NT Service. Will it also create 2 processes?