Measurement-computing GPIB-488.2 Manuale Utente Pagina 25
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GPIB 488.2 Porting Guide 986992 IOtech to Associated MCC APIs 3-7
IOtech GPIB Command Associated MCC GPIB 488.2 Command
ControlLine TestSRQ
Limited functionality
Syntax
ControlLine INT WINAPI ControlLine(DevHandleT devHandle);
TestSRQ TestSRQ(int board, short *result)
Usage Notes
ControlLine, no longer to be used. The ControlLine command could only be used only
on IEEE 488 devices. This command returned the status of the IEEE 488 bus control lines as
an 8-bit unsigned value (bits 2 and 1 were reserved for future use), as indicated in the table.
Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
EOI SRQ NRFD NDAC DAV ATN 0 0
TestSRQ Is used to evaluate state of the SRQ line. TestSRQ does not alter the state of the
SRQ line. In the example, we test to see if SRQ is asserted.
Example:
Short result;
TestSRQ (0, &result);
if (result == 1)
{ /* SRQ is asserted */}
else
{ /* No SRQ at this time */}
- GPIB-488.2 Porting Guide 1
- Contents 2
- Overview 3
- Direct Replacement 5
- Minor Modification 5
- Major Modification 5
- No Equivalent Command 5
- How to Use the Guide 6
- CheckListener FindLstn 7
- FindListeners 9
- Also see: 10
- CheckListener 10
- Also See: 10
- MyListenAddr 10
- SendData 12
- NO EQUIVALENT 13
- MyTalkAddr 14
- No Equivalent Commands 20
- Clear DevClear 22
- Usage Notes 22
- ClearList DevClearList 23
- Close DevClear 24
- EnableLocal 24
- Receive 27
- FindListeners FindLstn 30
- GetError 31
- GetErrorList 31
- Syntax 31
- Hello TestSys 32
- KeepDevice 33
- Listen EnableRemote 34
- SendSetup 34
- Local EnableLocal 35
- LocalList EnableLocal 35
- Lol SendLol 36
- SetRWLS 36
- MyListenAddr EnableRemote 38
- OpenName 41
- PPoll PPoll 46
- PPollConfig PPollConfig 47
- PPollDisable PPollUnconfig 48
- RemoveDevice 51
- Reset ResetSys 52
- SendCmd SendCmds 53
- SendEoi 56
- ReadStatusByte 58
- Talk ReceiveSetup 59
- Trigger Trigger 61
- TriggerList TriggerList 62
- UnListen 63
- DevClear 63
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