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Open Discussion / Re: Which method should I use?
« on: April 10, 2018, 05:14:38 PM »
I wrote something very small to start with but I did try to connect to all the devices using ModbusTcp. I had no problems connecting and the first read worked without any problems but then I started getting a lot of exceptions when trying to read from a device. I tried to look at the exception but the error said 'Unknown error code -21 at ..... '
I'm not sure how to troubleshoot this. Any ideas? thanks.
I'm not sure how to troubleshoot this. Any ideas? thanks.