Measurement-computing GPIB-488 Bedienungsanleitung PDF herunterladen (Seite 63)

Chapter 3 GPIB 488.1 Library Reference

Programming Reference Manual 3-50 GPIB-488

IBWAIT

Forces application program to wait for a specified event(s) to occur.

Syntax

C ibwait (int boarddev, int mask)

Parameters

boarddev is an integer containing the board or device handle.

mask specifies the events that ibwait will wait for. Each bit in mask represents a different

event. These bits are the same as the bits in

ibsta positions.

For more information regarding

ibsta, see Appendix B, IBSTA.

Returns

ibsta will contain a 16-bit status word as described in Appendix B, IBSTA.

iberr will contain an error code, if an error occurred.

Usage Notes

Because the mnemonic for each bit of ibsta is defined as a constant within the header file,

you can elect to use the mnemonic rather than the hex value. If

TIMO is set, ibwait returns

if the event does not occur within the timeout period of the device.

If a GPIB interface board is specified, the

RQS bit is not applicable.

Bit 15 14 13 12 11 10 9 8

Event ERR TIMO END SRQI RQS CMPL

Bit 7 6 5 4 3 2 1 0

Event LOK REM CIC ATN TACS LACS DTAS DCAS

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 115 116

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Measurement-computing GPIB-488 Bedienungsanleitung Seite 63