Ankur

Setup hardware protection with Snap7

CPU hardware protection through programming

I want to setup conditional read/write protection to CPU S7-317 by using Snap7 API. The protection must me kind of something that we do in Hardware Configuration of CPU so that the protection will not be eliminated even if the CPU is in STOP mode though keyswitch.

How to check if that port is open or not? and if not, how to open it?

I am trying to connect to read data from PLC which is at remote location. I am using client.ConnectTo function from a VB application to connect to that PLC. Though I can ping IP address of that PLC, I am getting "unreachable peer" in reply of that function. I also tried the example applications given in the downloaded folder of your library but they are giving the same response. Is there any clue to overcome this issue?