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Problems with the digital input/ouput

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Hello,

I have a little problem with my PCI-6143 card. I would like to use two digital connectors one as a input and one as a output. Now I have the problem that I don't know how I adress them. The input works as I want but the output not.

As example. I call my output channel over this name: Dev1/port0/line0:0.
With this call the application works fine. If I change the output channel to Dev1/port0/line4:0 I get an error that the values can not be read and only 1 and 0 are correct values.
I hope the call is right, I wrote that out of my head.

My questions are. Ist it correct to call a single digital channel with this name?
I am not quite sure because I do not understand what these "line" means and if I allocate really only one channel or more.
The second questions is, can someone give me a example how I allocate two digital channels (how to adresse them)?
I know it may be a easy question but I fail to do it correct.

Hope someone can help me.

Best Regards

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