Instrument Control Toolbox    
BusManagementStatus

Indicate the state of the GPIB bus management lines

Description

BusManagementStatus is a structure array that contains the fields Attention, InterfaceClear, RemoteEnable, ServiceRequest, and EndOrIdentify. These fields indicate the state of the Attention (ATN), Interface Clear (IFC), Remote Enable (REN), Service Request (SRQ) and End Or Identify (EOI) GPIB lines.

BusManagementStatus can be on or off for any of these fields. If BusManagementStatus is on, the associated line is asserted. If BusManagementStatus is off, the associated line is unasserted.

Characteristics

Usage
GPIB
Read only
Always
Data type
Structure

Values

off
The GPIB line is unasserted
on
The GPIB line is asserted

The default value is instrument dependent.

Example

Create the GPIB object g associated with a National Instruments board, and connect g to a Tektronix TDS 210 oscilloscope.

Write the *STB? command, which queries the instrument's status byte register, and then return the state of the bus management lines with the BusManagementStatus property.

REN is asserted because the system controller placed the scope in the remote enable mode, while EOI is asserted to mark the end of the command.

Now read the result of the *STB? command, and return the state of the bus management lines.

ATN is asserted because a multiline response was read from the scope.


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