Measurement-computing Digital488 Manual do Utilizador descarregar pdf (Página 51)

Section 3 Command Descriptions

3.21

Port Pn

The

Port

command determines which port is selected for data input/output. In

the default mode (

), all ports are selected. The

thru

commands select a

specific eight bit port.

It is recommend that the

Bus Output

command be used with the

mode to

determine which ports will be output when the

Digital488

is addressed to talk.

Data in modes

throuth

will be input or output in groups of eight bits.

All five ports are selected

Port 1 is selected

Port 2 is selected

Port 3 is selected

Port 4 is selected

Port 5 is selected

Example:

CLEAR 718

reset the

Digital488

OUTPUT 718;"P4X"

select port 4

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Measurement-computing Digital488 Manual do Utilizador Página 51