Measurement-computing GPIB-488 Manuel d'utilisateur télécharger pdf (Page 103)

GPIB-488 B-1 Programming Reference Manual

IBSTA

Every GPIB library routine returns a 16-bit status word to the variable

ibsta. This status word describes the current condition of the GPIB bus

lines and the GPIB Interface Board. By examining the status word, the

programmer may determine what path the application program is to take.

Note that the mnemonics used to describe each bit of the status word are

defined within the header file for each language.

The status word contains 16-bits. If a bit equals 1 (set), the corresponding

condition is true. Likewise, if a bit equals 0, then the corresponding

condition has not occurred. The status word is of the following format:

Bit 15 14 13 12 11 10 9 8

ERR TIMO END SRQI RQS CMPL

Hex

Value

8000 4000 2000 1000 800 100

Bit 7 6 5 4 3 2 1 0

LOK REM CIC AT N TACS LACS DTAS DCAS

Hex

Value

80 40 20 10 8 4 2 1

1 2 ... 98 99 100 101 102 103 104 105 106 107 108 ... 115 116

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Measurement-computing GPIB-488 Manuel d'utilisateur Page 103