National Instruments GPIB-PC - page 121

BASICA/QuickBASIC GPIB-PC Function Calls Section Four A
GPIB-PC User Manual 4A-46 ©National Instruments Corp.
Which PPE and PPD messages are sent and the meaning of a particular
parallel poll response are all system dependent protocol matters to be
determined by you.
On exit, all devices are unaddressed.
Board IBPPC Function:
When BD% specifies an interface board, the board itself is programmed
to respond to a parallel poll by setting its local poll enable (lpe)
message to the value of V%.
Refer also to IBCMD, IBIST, and Table 2.1 for additional information.
Device Examples:
1. Configure the device DVM% to respond to a parallel poll by
sending data line DIO5 true (ist=0).
100 V% = &H64
110 CALL IBPPC (DVM%,V%)
2. Configure the device DVM% to respond to a parallel poll by
sending data line DIO1 true (ist=1).
100 V% = &H68
110 CALL IBPPC (DVM%,V%)
3. Cancel the parallel poll configuration of the device DVM%.
100 V% = &H70
110 CALL IBPPC (DVM%,V%)
Board Example:
1. Configure the interface board BRD0% to respond to a parallel
poll by sending data line DIO5 true (ist=0).
100 V% = &H64
110 CALL IBPPC (BRD0%,V%)