initialization problem multiple serial

Hello all

I have attached a vi that gives me a problem I cannot solve and would appreciate any help.

The vi is supposed to intialise up to 7 ports series (only using 5 at the moment), and I guess that's a plausible way to do initialization (maybe wrong). The serial ports are connected to a pc via a usb hub. The windows XP operating system recognizes the Device Manager ports.

The problem is that when the vi is executed, the following error is reported as shown in the word document attached.

I compared the port settings in the properties in Device Manager for each port to the vi settings, and they match. What can we do?

If anyone has a configuration with several serial ports could try the vi and see if it works for them?

Thank you and best regards

Ray

It has nothing to do with several serial ports.  This has to do with an invalid parameter, you are trying to use it to configure one of the serial ports.

Look at the information in the error message.  Point 4 of the property node to configure Serial Port VI is the setting of Stop Bits.  I see a point of stress goes in this VI, then that tells me the type of data in performing connections does not quite.

You have an array of values of I32 and your values are made up of 1.  Disconnect this table and right-click on the terminal to configure Serial Port VI and choose Create Constant.  You'll see you get a data type of ring.  It's a U16.  But if you look at the items in there, you will see that the stop bits 1.0 has a value of 10.  1.5 has a value of 15, 2.0 has a value of 20.  If the value of 1 has no meaning to this property node and you get an error.  You should be wiring in a value of 10.

Delete this table.  Create a table of constants in the ring.  Turn it into a control, and then choose the value of the correct ring for each item in your table.

You have several other points of constraint.  They may not cause problems, but I consider disconnect them, create a constant of the correct data type and that using the table that you wire to configure Subvi.

I have modified your VI and attached to it.  See if it works for you.

Tags: NI Software

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