I'm been able to log data comming in over an RS485 line and log it to a worksheet, I'm also displaying this data in realtime on a chart, the only problem is that when the data hits the end of the chart the axis does not automatically expand to diaply the data.

I want to be able to programatically alter the maximum range of the chart whent he data exceeds the range, I have searched on the net and have yet to find anything that relates to what I want to do, can anyone help me out?

So far I have this for the chart

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Thanks
Ron