Leaderboard

lovemachinez, You don't need to close the previous port before you read from the next port. You should open all your ports, read from them in the For Loop as QueueYueue suggested, and then close all of them when you are finished. See attached example. multiport example LV2010.vi

I'm not exactly sure where you're having the trouble. There are a lot of ways to do this. I'd say you should first take a look at how to use Multiple Plot graphs and charts (in the detailed help of the Chart control). There are example VIs with these. Now you should be able to use the code that you already have to read from 1 serial port in a For Loop (each iteration of the for loop will read from a different serial port) to acquire all of your data. Now you just need to put the two together.

As a side note, this has been useful to me. Also, check this idea exchange topic. http://digital.ni.com/public.nsf/allkb/92080885AFE94B2D8625794A007B6D0C?OpenDocument http://forums.ni.com/t5/LabVIEW-Idea-Exchange/Please-clearly-mark-the-IMAQ-functions-that-require-a-Run-Time/idi-p/1832859