Measurement-computing Micro 488/EX rev.2.1 Manual de usuario descargar pdf (Pagina 56)

Section 4 General Programming

4.14

PERIPHERAL

This event occurs when the Micro488/EX is force from the

Controller Active State (*SC•CA) to the Peripheral State

(*SC•*CA) by receipt of IFC from the System Controller.

This can be useful in detecting receipt of IFC when in the

*SC•CA state. This event is edge sensitive.

CONTROLLER

This event occurs when the Micro488/EX receives control

of the bus and transitions from the Peripheral State

(*SC•*CA) to the Controller Active State (*SC•CA). This

occurs when the Take Control interface message is

received by the Micro488/EX. This event is edge

sensitive.

TRIGGER

This event occurs 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

MACRO

is executed, the internal status, as read

by the

STATUS

command, is cleared.

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.

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