Measurement-computing Micro 488/EX rev.2.1 Uživatelský manuál stáhnout pdf (Strana 102)

Section 5 Command Descriptions

5.32

ENTER (Peripheral mode)

In Peripheral mode, the

ENTER

command receives data from the bus under

control of the Active Controller. The Active Controller must put the Micro488/EX into

the Listen state and configure some bus device to provide the Micro488/EX with data.

The Listen state can be checked with the

STATUS

command, can cause a reported

event message with the

ARM

command, or can force a Macro execution with the

event

DOMACRO

command. A time-out error will occur (if enabled) if the

Micro488/EX does not receive a data byte within the time out period after issuing the

ENTER

command.

If the character count,

count

, is specified, then exactly that number of characters

will be read from the device with the serial output terminators appended. Otherwise,

ENTER

terminates reception on detection of the line feed (LF) character, which may be

overridden by specifying the terminator in the ENTER command.

If a terminator,

term

, option is specified, all CR and LF characters in the input

data are unconditionally discarded. When the specified terminator is detected, it is

discarded and replaced with the serial terminator(s) before being returned to the serial

host. The optional terminator applies ONLY to the

ENTER

command it is sent with.

The terminator returns to a Line Feed on subsequent

ENTER

commands.

If the

EOI

option is specified, all characters are returned to the host until the

EOI

line is detected. The character sent with

EOI

asserted is also returned followed by the

serial output terminator(s).

count

is the number of characters to

ENTER

term

and

EOI

override the normal IEEE bus input LF terminator.

RESPONSE Device-dependent data. If

count

is specified, then

count

characters

will be returned followed by the serial output terminators. Otherwise

the response ends when the IEEE bus input terminator is detected and

the serial output terminators are appended to the returned data.

1 2 ... 97 98 99 100 101 102 103 104 105 106 107 ... 217 218

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