Configures a GPIB device to respond to parallel polling.
[ lStatus = ] GpibPPollC ( lDevice, lDataLine, lSense )
The GpibPPollC procedure syntax has the following parts:
|
Name |
Type |
Description |
|
lStatus |
Long |
Status |
|
lDevice |
Val Long |
Device address |
|
lDataLine |
Val Long |
Parallel poll configure response line 1-8 |
|
lSense |
Val Long |
Data sense: 0 or 1 |
This function configures the specified device to respond to parallel polling according to the DataLine and the Sense.
This function accepts a Long integer containing the GPIB device number (lDevice), a Long integer containing the data line number on which the device is to respond (lDataLine may be 1 through 8), and the response to the condition under which the device is to assert or un-assert the specified data line (lSense may be 0 or 1).
The hexadecimal format of lDevice is as follows:
lDevice = 0xBBPPSS
Where:
|
BB |
Board address (1 - 9) |
|
PP |
Device Primary address (0 - 31) - 0 if not used (bus address), 31 used for Primary address of 0 |
|
SS |
Device Secondary address (0 - 31) - 0 if not used (bus address or device without Secondary address), 31 used for Secondary address of 0 |
The value of lDevice may be obtained using the GetDriverAddress function.
The function returns 0 on success and -1 on failure.
Not all devices can be configured to respond to parallel polling. Devices with the built-in capability to configure themselves for parallel polling will ignore the GpibPPollC function.
The following command configures the SCOPE to assert data line number 2 to '1':
GpibPPollC(GetDriverAddress("SCOPE") , 2, 1)
!...
! program statements
!...
If (GpibPPoll(GetDriverAddress("SCOPE")) & 2)=1
! do something
Endif