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D-26 daqX API - Command Reference,
6-24-99
WaveBook User’s Manual
daqIOWriteBit
DLL Function
daqIOWriteBit(DaqHandleT handle, DaqIODeviceType devType, DaqIODevicePort devPort,
DWORD whichDevice, DaqIOExpansionPort whichExpPort, DWORD bitNum, BOOL bitValue);
C
daqIOWriteBit(DaqHandleT handle, DaqIODeviceType devType, DaqIODevicePort devPort,
DWORD whichDevice, DaqIOExpansionPort whichExpPort, DWORD bitNum, BOOL bitValue);
Visual BASIC
VBdaqIOWriteBit&(ByVal handle&, ByVal devType&, ByVal devPort&, ByVal whichDevice&,
ByVal whichExpPort&, ByVal bitNum&, ByVal bitValue&)
Delphi
daqIOWriteBit(handle:DaqHandleT; devType:DaqIODeviceType; dvPort:DaqIODevicePort;
whichDevice:DWORD; whichExpPort:DaqIOExpansionPort; bitNum:DWORD;
bitValue:longbool)
handle
Handle of the device to perform an I/O write to
devType
I/O device type
devPort
I/O device port selection
whichDevice
I/O device selection
whichExpPort
I/O device expansion port address
bitNum
Bit number to write
Parameters
bitValue
Bit value to write (TRUE - high, FALSE - low)
Returns
DerrNoError
No error (see the API Error Codes table at the end of this chapter).
See Also
daqIOWrite, daqIORead, daqIOReadBit
Program References
None
Used With
All devices
Description
daqIOWriteBit allows you to write a specified bit on the selected device and port. The write operation will write the specified bit value to
the bit selected. The selected bit, specified by the bitNum parameter, corresponds to the channel on the port for the I/O to be driven.
The bitValue parameter should be set to TRUE to drive the channel to a high state or FALSE indicating a low state.
daqOnline
DLL Function
daqOnline(DaqHandleT handle, PBOOL online);
C
daqOnline(DaqHandleT handle, PBOOL online);
Visual BASIC
VBdaqOnline&(ByVal handle&, online&)
Delphi
daqOnline(handle: DaqHandleT; var online: longbool)
handle
Handle of the device to test for online
Parameters
online
Boolean indicating whether the device is currently online
Returns
DerrNoError
No error (see the API Error Codes table at the end of this chapter).
See Also
daqOpen, daqClose
Program References
ERREX.PAS (Delphi)
Used With
All devices
Description
daqOnline allows you to determine if a device is online. The device handle must be a valid device handle which has been opened
using the daqOpen function. The online parameter indicates the current online state of the device (TRUE - device online; FALSE -
device not online).
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