Comm. problems


Dovi

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Hi, I built a project on DF using MBTCP for comm with PLC.

In general, I read recipes for 5 different tanks in parallel from an Excel file into channels going to the PLC. When I choose recipe & tank to which the recipe in intended (1.jpg) - a sequence is generated to read other data from the file to selected tank's channels. The script is running fine and the data is being read but there are a lot of times some "holes" and data missing because of Comm.problems (2.jpg) so I need to run the script multiple times. It's not happening always but it's bothering. I entered delays in the sequence but it didn't help (3.jpg & 4.jpg). I'm connected to the PLC directly and not by a switch. What should I check more ?

Dovi

1.jpg

2.jpg

3.jpg

4.jpg

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That error just means DAQFactory had enough timeouts that it couldn't keep up with your desired timing interval and had to reset the timing clock.  Its a side-effect of your main problem.

Simplify your system as much as possible, for example, read just one channel and see what happens.

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