ICP DAS USA PCI-D64HU, User Manual, Page: 35 / 128

4.2 d64h_di_readline
VC6
short d64h_di_readline(BYTE bCardID, U16 wLine, U16* pValue)
VB6
d64h_di_ readline(ByVal bCardID As Byte, ByVal wLine As Integer, ByRef pValue As Integer)
As Integer
Description:
This function reads specific digital-input line.
Parameters:
bCardID: The specific Card ID that is configured with the on-board Dip-Switch.
wLine: The parameter indicates the specific line to be input.
pValue: The pointer to the 16-bit variable that stores the specific digital-input line.
Return Code:
SUCCESS_NO_ERROR: The function returns successfully.
ERROR_INVALID_CARD_ID: There is no active PCI-D64HU card configured with bCardID, or the
given Card ID is invalid (for instance, Card ID is assigned to 254).
ERROR_INVALID_PORT_LINE: Indicates the invalid setting is assigned to parameter wLine .
ERROR_ACCESS_VIOLATION_DATA_COPY: Some system exception occurs while copying
memory, please check the pointer-type parameter you assign to this function.
ERROR_DI_PIO_READ: Cannot read the specific digital-input line, please call GetLastError() for
further system information.
PCI-D64HU Function Reference Version 19