help with call library function node

[jhfgfuygiy]

i've problem with call library function node as i try to use velleman k8061 dll file to get it work labview

all function i try get the same problem

but i choose one to explain it 

SetDigitalChannel
Syntax
PROCEDURE SetDigitalChannel(CardAddress: Longint; Channel: Longint);
Parameters
CardAddress: The address of previously opened card.
Channel: Value between 1 and 8 which corresponds to the output channel that is to be set.
Description
The selected digital output channel is set ON.
Example
BEGIN
SetDigitalChannel(0, 1);

now when i try to call  library function node to k8061.dll and set 2 parameters one for card address and other for channel

 card address type: numeric & dtat type : signed 32 bit intger

channel          type : numeric & data type :signed 32 bit intger

function prototype

void setdigitalchannel(int32_t address,intg32_t channel);

i also configure call library function node error checking to maximum

now as i run i get  error 1517 occurred and tell me that mismatch between the calling conventions ???

[muks]

1517

An error occurred in the Call Library Node processing. This error was most likely a configuration mismatch between the calling conventions of the Call Library Node and the function being called in the DLL.

[muks]

What is your lv version?

[jhfgfuygiy · Accepted solution]

problem solved

thanx

[jhfgfuygiy]

problem solved

thanx

[muks]

Glad that it got solved but can you explain the solution a little bit. There isnt much on the error explanation

[jhfgfuygiy]

i was choosing c insted of stdcall

[harryfish]

Hi

I am also working on controlling K8061 board with LabView. Would you kindly share your VI with me? 

The program needs to be able to set output votages in 3 channels from 0-5 V.

Thanks a lot for your help in advance.

email: twu@optics.arizona.edu

[BoKnows]

Is it safe to assume you already have the .dll required?  If not, their software appears to be here: http://www.velleman.eu/support/downloads/?code=K8061

Once you have the drivers installed, consider following this tutorial: https://decibel.ni.com/content/docs/DOC-9069  It should help you understand the Call Library Function Node.

Make note of the setting the previous user had incorrect and ensure you set that to c, as he did.

[harryfish]

Thank you. It works now. You were right that I had wrong setting by choosing stdcall not c. I don't understand why some functions need to be set in c (like OpenDevice and CloseDevice) but some need to be set in stdcall (like OutputAnalogChannel)? I randomly try/ error to make it work but is there a reason for each setting? Thanks for any advice.