1. No category

1.Dara type
1.1.When you use windows DLL function call to implement some
special function must be pay a attention in the data types.
Because different software packages have different data types.
If the data types are not meet the function call in the DLL will
cause some datas lose or datas incorrect . The Table1 is a list for
LabVIEW,HPVEE,TESTPOINT different data types.
Table1
LabVIEW
HPVEE
supporting DLL
Data Types
Signed 8-bit Integer
LONG
SHORT
2-bytes
Signed 16-bit Integer
LONG
WORD
4-bytes
Signed 32-bit Integer
LONG
DWORD
8-bytes
Unsigned 8-bit Integer
LONG
SHORT
2-bytes
Unsigned 16-bit Integer LONG
WORD
4-bytes
Unsigned 32-bit Integer LONG
DWORD
8-bytes
4-byte Single
DOUBLE
FLOAT
4-bytes
8-byte Double
DOUBLE
DOUBLE
8-bytes
2.How to use the DLL in the LabVIEW
2.1.Press the mouse right key on the VI diagram in LabVIEW.
2.2.After the step 2.1 will pup up the function menu as show in figure1.
2.3.Put the mouse on Advanced of Function as show in figure 2.
2.4.After the step 2.3 then select the “Call Library Function “item and
put it on the VI diagram as show in figure3.
2.5.Put the mouse on the “Call Library Function “VI icon the press the
mouse right key.
2.6.After the step 2.5 will pup up the function items as show in figure4.
2.7.Select the “Configure” item to setup calling function of DLL.
2.8.After step 2.7 will pup up the “Call Library Function” dialog box
as show in figure5.
2.9.Set the “Call Library Function” parameters
2.9.1.Set the “Library Name or Path”. Input the supporting DLL name
and full path. The other way you can use the “Browse” function to
fine the supporting DLL files as show in figure 6.
2.9.2.Set the “Function Name”. The function name must be full met the
calling function of DLL file. For example, if you want to use the
PCI-1202 to implement a number of A/D converts ,you can use the
supporting DLL function.
Figure 1.Pup up function menu use mouse right key in VI diagram.
Figure 2.Move mouse to “Advanced Function”
Figure 3. Select the “Call Library Function” in figure 2.
Figure 4.Select the “Configure” item to setup “Call Library Function”.
Figure 5.When you select “Configure” item in the figure 4 will show a
dialog box…to ask you for input “Call Library Function” parameters.
Figure 6.To search the supporting DLL use “Browse” function.
Figure 7.Set the “Call Library Function” parameters.
Figure 8.Completed the “Call Library Function “setup.
Figure 9.Create the control, constant or indicator wire to
“Call Library Function” icon.
Figure 10.”Run”in LabVIEW.