Measurement-computing Digital488/80A Bedienungsanleitung PDF herunterladen (Seite 70)

P - Port Select

SYNTAX

Pn Select port(s) n for data I/O, where n = value from 0 to 5.

(Default) Select all 5 ports.

Select Port 1.

Select Port 2.

Select Port 3.

Select Port 4.

Select Port 5.

P? Returns current port(s) selection n.

DESCRIPTION

The Port Select (

P) command determines which port is selected for data input/output. In the default mode P0, all 5

ports are selected. Modes

P1 through P5 select a specific 8-bit port.

It is recommended that the Bus Input/Output (

G) command be used with mode P0 to select which type of port data

(input or output) is sent, when the Digital488/80A is addressed to Talk. Data in modes

P1 through P5 are input or

output in groups of 8 bits.

EXAMPLE

PRINT#1,"CLEAR08"

Line 1: Reset the Digital488/80A.

PRINT#1,"OUTPUT08;P4X"

Line 2: Select Port 4.

64 Digital488/80A Commands

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Measurement-computing Digital488/80A Bedienungsanleitung Seite 70