NI 9472 with 9171 to control a 24V Solenoid Valve

1) I am trying to connect a solenoid valve to a NI digital module 9472 with a USB DAQ Chassis 9171. I have verified the voltage signals and used NI Max to turn the valve on and off. Now I am trying to find a VI to do this operation i.e. turning on and off one solenoid valve.
I found some example code such as: Digital - SW - Timed Output.vi (attached). I modified the code a little bit to interface the digital channels from the module. Such as in the DAQmx tasks, I have created a "task in" channel to read the signal from specic port from 9472, and as the very same port as the i/o lines . But I keep getting an error -200463 message:
"Specified read or write operation failed, because the number of lines in the data for a channel does not match the number of lines in the channel.If you are using the Digital Waveform datatype, make sure the number of lines in the digital waveform matches the number of lines in the channel. If you are using boolean data, make sure the array dimension for lines in the data matches the number of lines in the channel.
Number of Lines in Channel: 1; Number of Lines in Data&colon; 8"
I am very new to Lab view, so any help in this will be greatly appreciated.
Vikram

Hi vdey,
There is a similar thread that handles that error code when using a DAQmx write. Please take a look at the following link:
http://forums.ni.com/t5/LabVIEW/Daqmx-read-error-200463/td-p/911975

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I am working on a prototype composite manufacturing project wherein I am trying to connect four 24 VDC solenoid valves to a NI digital module 9472 with a USB DAQ Chassis 9171. The solenoids will be used to control several pneumatic air pistons. I have so far used NI Max and an NI example code "Digital - SW-Timed Output" to turn one valve on.
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2. If I connect 4 such solenoids, and want to turn them on in a pattern such as "TFFF,FTFF,FFTF,FFFT"?
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Hi vdey
I hope you are doing great. Regarding your questions about the digital outputs generation, I did my research using the same example of Digital -SW Ouput VI.
I did not change anything of the code except for some few changes.
Ok, first question
Using this VI example I am able to control the outputs and when I used one of the booleans controls I am able to turn on and off the different outputs of the modules.
Second question
If you want to create an automatic pattern with the outputs of the module, I think you can use a array with Booleans premade it by you combined with a state machine.
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Fourth Question
Maybe you can try with a Foor loop with a control attached to the N terminal to control the times you want to do this action.
Fifth Question
Try to copy the folder where are located these examples and save this new folder in a new location and try to work over this new copy.
I am attaching somes links that could be useful to you;
Sintax of multiple channels
http://digital.ni.com/public.nsf/allkb/9A2AF5E10E0C893386256FE8006807DF?OpenDocument
Tutorial States Machines
http://www.ni.com/tutorial/7595/en/
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NI 9472 with 9171 to control a 24V Solenoid Valve

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