There are several easy ways to update a DASYLab Global Variable. If this is your question, here is the answer:
1- Under Options/Define Global Variable, set up the variable with "Type in at Start of Experiment" checked. Then, every time the acquisition experiment starts, the user will be prompted for the value.
2- Use an Action module to "Enter Global Variable". This action will display a prompt to the user to enter the specified values. You can enter a list of variables to be updated. Any legal Event can be specified. Many users set up a Switch Module (One-Shot), where the user clicks the switch, and the rising-edge event causes the Action to pop up the prompt to enter the variable. You can also use Key Events to specify this action. (Optio
ns Menu)
3 - Use a Slider module as the user entry technique. Set up the slider to look like a data entry box (Slider Properties: turn off "with slider" to remove the actual slider display, leaving only the value entry field. The slider can then connect to a Variable Write module, or act as input to any other module.
I hope this helps.
Please see the www.ni.com Knowledge Base articles for your other questions.
Please see www.dasylab.net to download the Hands On Guide to DASYLab, for more assistance.
Measurement Computing (MCC) has free technical support. Visit
www.mccdaq.com and click on the "Support" tab for all support options, including DASYLab.