User`s guide

4.11 COM Port
4.11.1 COMOpen
Opens 1 of 4 serial communication ports (9 serial ports if SuperCom is installed). This function
must be called before using any of the functions listed below.
Input:
Data type Parameter Description
PortNo The number of the serial 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.
ComHandle The handler id of the serial port specified by PortNo
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