Measurement-computing DAC488 v.1 Manual do Utilizador descarregar pdf (Página 77)

DAC488 User’s Manual DAC488 Commands 71

K - End-Or-Identify Control

TYPE

System Command

SYNTAX

Where

n = 0

Assert

EOI

on last bus terminator.

(Default) Do not assert

EOI

on last bus terminator.

Returns current

EOI

selection.

DESCRIPTION

The EOI line is one of five bus management lines on the IEEE 488 interface. It is used by a Talker to indicate the end

of a multiple byte transfer sequence. The controller can change the EOI mode by programming the DAC488 from the

bus. In the K0 mode, the EOI line is asserted by the DAC488 on the last byte of every bus output string. In the K1

mode, the EOI function is disabled.

EXAMPLE

PRINT#1,"OUTPUT09;K1 X"

Line 1: Disables EOI assertion on last byte.

PRINT#1,"OUTPUT09;K?"

Line 2: Request EOI selection from DAC488.

PRINT#1,"ENTER09"

INPUT#2,A$

PRINT A$

Line 5: Display shows: K1.

1 2 ... 72 73 74 75 76 77 78 79 80 81 82 ... 113 114

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Measurement-computing DAC488 v.1 Manual do Utilizador Página 77