Measurement-computing Micro 488/EX rev.2.1 Instrukcja Użytkownika Pobierz pdf (Strona 83)

Section 5 Command Descriptions

5.13

TRIGGER

The event message '

TRIGGER

' is returned to the serial host when the

Micro488/EX, as a Peripheral (*CA), receives a Group Execute

Trigger (GET) command from the Active Controller. This event is

edge sensitive. When the event message is sent, the internal status, as

read by the

STATUS

command, is cleared.

CLEAR

The event message '

CLEAR

' is returned to the serial host 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 event message is

sent, the internal status, as read by the

STATUS

command, is

cleared.

TALK

The event message '

TALK

' is returned to the serial host 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

The event message '

LISTEN

' is returned to the serial host 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

The event message '

IDLE

' is returned to the serial host 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

event message is sent, the internal address change 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

The event message '

CHANGE

' is returned to the serial host 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 event

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