Measurement-computing Micro 488/EX rev.2.1 Instrukcja Użytkownika Pobierz pdf (Strona 119)

Section 5 Command Descriptions

5.49

CLEAR

This event occurs when the Micro488/EX, as a Peripheral (*CA),

receives a Device Clear (DCL) or a Selected Device Clear (SDC)

command from the Active Controller. This event is edge sensitive.

When the Macro is executed, the internal status, as read by the

STATUS

command, is cleared.

TALK

This event occurs when the Micro488/EX, as a Peripheral (*CA),

detects its My Talk Address (MTA) command from the Active

Controller. It indicates that the controller has requested information

from the Micro488/EX. This event is edge sensitive.

LISTEN

This event occurs when the Micro488/EX, as a Peripheral (*CA),

detects its My Listen Address (MLA) command from the Active

Controller. It indicates that the controller has information it wants to

send to the Micro488/EX. This event is edge sensitive.

IDLE

This event occurs when the Micro488/EX, as a Peripheral (*CA),

transitions from a Talker or Listener state to an idle state (neither

talker or listener). It indicates that the controller has unaddressed the

Micro488/EX with either an UNT or UNL command. This event is

edge sensitive. When the Macro is executed, the internal status, as

read by the

STATUS

command, is cleared. This event is tested prior

to the

CHANGE

event and will clear the internal

CHANGE

status only

when the addressed to un-addressed transition occurs.

CHANGE

This event occurs when the Micro488/EX, as a Peripheral (*CA),

detects an addressed state change. This occurs on transitions from a

Talker or Listener state to an idle state (neither talker or listener), or

from an idle state to a talker or listener state. This event is edge

sensitive. When the Macro is executed, the internal status, as read by

the

STATUS

command, is cleared. This event is tested after the

IDLE

event. If

IDLE

is enabled, the

CHANGE

event's Macro will only

execute when an un-addressed to an addressed transition occurs.

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