ADLINK cPCI-7252 - Manual (Page 45)

C/C++ Libraries 35
@ Return Code
ERR_NoError, ERR_BoardNoInit
5.7 _7250_DO_Read_Back, _7252_DO_ReadRelay
@ Description
This function is used to read-back data from the digital output port
which is control by the 725X_DO function. There are 8-bit digital
outputs on the PCI-7250, cPCI-7252, or PCI-7251 extended
board. You can readback all RELAY status (High or Low) by using
this function.
@ Syntax
C/C++ (DOS)
U16 _7250_DO_Read_Back (U16 cardNo, U16
doChannelNo, U8 *doReadBackData)
U16 _7252_DO_ReadRelay (U16 cardNo, U16
doReadBackData)
C/C++ (Windows 95)
U16 W_7250_DO_Read_Back (U16 cardNo, U16
doChannelNo, U16 *doReadBackData)
U16 W_7252_DO_ReadRelay (U16 cardNo, U16
*doReadBackData)
Visual Basic (Windows 95)
W_7250_DO_Read_Back (ByVal cardNo As Integer,
ByVal doChannelNo As Integer, doReadBackData
As Integer) As Integer
W_7252_DO_ReadRelay (ByVal cardNo As Integer,
doReadBackData As Integer) As Integer
@ Arguments
cardNo: card number selected
doChannelNo: Digital Output Channel No, the constant is:
DI_PORT0 0x00 Access the 8 Digital Input of PCI-7250
DI_PORT1 0x01 Access the 8 Digital Input of Expansion Board PCI-7251#1
DI_PORT2 0x02 Access the 8 Digital Input of Expansion Board PCI-7251#2