Measurement-computing Micro 488/EX rev.2.1 Manual de usuario descargar pdf (Pagina 73)

Section 5 Command Descriptions

5.3

Items enclosed in square brackets (

[item]

) are optional. Multiple

items enclosed in square brackets separated by vertical lines

(

[item1|item2|item3]

) are optional, any one or none may be chosen.

No more than one item may be selected.

Ellipses (

…

) within square brackets mean that the items in the brackets

may be repeated as many times as desired. For example

[,addr…]

means

that any number, to a maximum of 15, of address separator-address

combinations may be used.

Braces, or curly brackets, (

{item1|item2}

) mean that exactly one

of the enclosed items is required.

Combinations of brackets are possible. For example,

{term[term][EOI]|EOI}

allows the choice of

term

EOI

term

EOI

, or just

EOI

, but does not allow the choice

of "nothing."

Numeric parameters (those that are given as numbers) are decimal

unless preceded by

in which case they considered to be hexadecimal.

Thus

100

is decimal

100

&H64

is hexadecimal

which equals decimal

100

&HFF

is decimal

255

, and

0FF

is invalid because

is not a valid

decimal digit. The only exception to this rule is that bus addresses, both

primary and secondary, must be specified as two-digit decimal numbers.

Hexadecimal bus addresses are not allowed.

Several of the commands require additional or optional parameters.

These are further described with each command, but discussion of the more

common ones follow.

5.2.1.1 Bus Addressing

pri-addr

A two-digit primary device address in the

range of

sec-addr

An optional two-digit secondary device

address in the range of

1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 217 218

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Measurement-computing Micro 488/EX rev.2.1 Manual de usuario Pagina 73

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