Measurement-computing GPIB-488 Instrukcja Użytkownika Pobierz pdf (Strona 60)

Chapter 3 GPIB 488.1 Library Reference

GPIB-488 3-47 Programming Reference Manual

IBTMO

Changes timeout value.

Syntax

C int ibtmo (int boarddev, int timeout)

Parameters

boarddev is an integer containing the board or device handle.

timeout specifies the timeout. The timeout value determines how long I/O routines wait for

a response from a device. When the timeout period expires during an I/O operation, the I/O

function returns an

EABO error. Valid timeout codes are shown in Table 3-6.

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. Contains the previous timeout code if

no error occurs.

Usage Notes

This routine is used to temporarily change the default timeout value assigned to the

device/GPIB Interface board.

Table 3-6. Timeout Codes

Code Value

Minimum

timeout

Code Value

Minimum

timeout

TNONE 0 Disabled T100ms 9 100 msec

T10us 1 10 msec T300ms 10 300 msec

T30us 2 30 msec T1s 11 1 sec

T100us 3 100 msec T3s 12 3 sec

T300us 4 300 msec T10s 13 10 sec

T1ms 5 1 msec T30s 14 30 sec

T3ms 6 3msec T100s 15 100 sec

T10ms 7 10msec T300s 16 300 sec

T30ms 8 30 msec T1000s 17 1000 sec

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 115 116

Brak uwag

Measurement-computing GPIB-488 Instrukcja Użytkownika Strona 60