User`s guide

4.5.9 WritePortByte
Writes an 8-bit data to the specified I/O port. The port address is an I/O port address on the PC.
Input:
Data type Parameter Description
DevHandle The handler id of the device specified by DevNum as
assigned by the LabVIEW program.
Port The port number of specified device
State Byte data written to the specified port
error in A cluster containing error information, such as the
status, code, and source elements that is passed from
a previous linked VI.
Output:
Data type Parameter Description
DevHandle The handler id of the device specified by DevNum as
assigned by the LabVIEW program..
error out A cluster containing error information. If error in
indicated an error, the status, code, and source
elements of error out have the same values as the
corresponding elements of error in