Measurement-computing DAC488 v.1 Manuel d'utilisateur télécharger pdf (Page 99)

DAC488 User’s Manual Appendix 93

Appendix A

IEEE 488 Bus & Serial Bus Lines…… 93

IEEE 488 Bus Commands…… 94

ASCII Codes…… 95

ASCII Code Summary…… 95

Decimal Values 00 to 63 - ACG, UCG & LAG…… 95

Decimal Values 64 to 127 - TAG & SCG…… 96

ASCII Code Details…… 97

Decimal Values 00 to 31 - ACG & UCG Characteristics…… 97

Decimal Values 00 to 31 - ACG & UCG Descriptions…… 98

Decimal Values 32 to 63 - LAG…… 99

Decimal Values 64 to 95 - TAG…… 100

Decimal Values 96 to 127 - SCG…… 101

IEEE 488 Bus & Serial Bus Lines

Bus State Bus Line Data Transfer (DIO) Lines

8 7 6 5 4 3 2 1

Bus Management Lines

IFC

Interface Clear

REN

Remote Enable

IEEE 488 Interface: Bus Management Lines

ATN

Attention ($04)

00000100

EOI

End-Or-Identify ($80)

10000000

SRQ

Service Request ($40)

01000000

IEEE 488 Interface: Handshake Lines

DAV

Data Valid ($08)

00001000

NDAC

Not Data Accepted ($10)

00010000

NRFD

Not Ready For Data ($20)

00100000

Serial Interface: Bus Management Lines

DTR

Data Terminal Ready ($02)

00000010

Ring Indicator ($10)

00010000

RTS

Request To Send ($01)

00000001

Serial Interface: Handshake Lines

CTS

Clear To Send ($04)

00000100

DCD

Data Carrier Detect ($08)

00001000

DSR

Data Set Ready ($20)

00100000

Hexadecimal & Decimal Values

Hexadecimal Value

$80 $40 $20 $10 $08 $04 $02 $01

Decimal Value 128 064 032 016 008 004 002 001

1 2 ... 94 95 96 97 98 99 100 101 102 103 104 ... 113 114

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Measurement-computing DAC488 v.1 Manuel d'utilisateur Page 99

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