Running the  _MAIN_.VI  sample VI


To run the sample application  _MAIN_.VI  with everything setup the way it is within that VI, take the following steps:
1.) Use  IniTool.exe  - which should be present in the archive from whence the and the LabView sample VI comes - to create the  M201_SP.INI  file with a 4-channel  ( 0, 1, 4, and 5 )  normal  ( multi-channel )  scan. For each channel, you must first select the main channel, and then select 0 for both the low and high channel. After each setting of the main channel/sub-channel set, you must click the  save the above values to memory now  button before proceeding to the next main channel/sub-channel set. Also look for the option to change  Log scan data to  and set it to  memory only.  You may also have to change the setting of the COM-port to what you are using for the M201. Leave all the other settings as they are  ( that application loads with default settings ).

Be sure to follow the on-screen instructions in  IniTool.exe  and set the low and high channel for each channel and then press the button below the selection boxes to save for each channel that has been modified. For this specific setup, you will first select main channel 0, and then set low channel to 0, followed by setting high channel to 0 - this channel should already be set that way by default, but just make sure that it is. Do the same for main channel 1  ( the default for channel 1 is not correct for use with the sample application included here ).  The rest of the channels can be left at their defaults since the defaults is to not scan any of the others.

After setting up the configuration be sure to use the  save and exit  button in that application to cause the file to be saved in your Windows directory which is where the DLL will be looking for it. Upon exit, you will likely be presented with a screen informing you that the scan interval has also be changed which is because of the number of channels that will be scanned - accept the changes, allowing the application to close and update the .ini file.

2.) Open  _MAIN_.VI  and press the  continuous run  button in the main menu, and then press  Initialize Device.  After the initialization is finished  ( an LED will appear on the screen during initialization, and then disappear when the initialization has completed ),  you can press the  click to start scanning  button and the scan data should display continuously in the two voltage boxes until you press the same scan button which should have been automatically renamed  click here to stop scanning.

3.) You can press the  Get One Voltage  button anytime after initialization, when not scanning, to read a single voltage with each click of that button, or use the button above it to change the channel that is used by polled mode.

4.) Do not stop the  continuous run  while scanning.

View  QuickRef.htm  ( internet connection required )  and  LabProto.htm  for information about interfacing the DLL to your custom VI, using the VIs provided here as a reference for making the calls into the DLL.

Note:  The two files mentioned above that are included with this archive were created at the same time as this archive and may not be the most recent. The most recent of those and other files and related information can be accessed from a   Table Of Contents Page  ( internet connection required )  at our website.

LVSampStart.htm  is a pictorial guide for the usage of  _main_.vi