Interface IGpib

GetAttribute

Use of this method is discouraged. All the non-deprecated standard attributes are accessible via properties on the appropriate COM interfaces.

SetAttribute

Use of this method is discouraged. All the non-deprecated standard attributes are accessible via properties on the appropriate COM interfaces.

LockRsrc

Locks the resource.

UnlockRsrc

Unlocks the resource

Init

Opens the resource. This is the first method on IVisaSession or any of its derived interfaces to be called. In general, you will not call this method because you will use the Resource Manager to create resources.

Close

Closes the resource. Sending the resource's COM object's reference count to zero (and thus destroying the object) also executes a close, but this method may be useful for environments with garbage collection or other facilities that make object lifetimes non-deterministic.

ControlREN

Controls the state of the GPIB REN interface line and, optionally, the remote/local state of the device. This operation asserts or deasserts the GPIB REN interface line according to the specified mode. 

The mode can also specify whether the device associated with this session should be placed in local state (before deasserting REN) or remote state (after asserting REN). This operation is valid only if the GPIB interface associated with the session object is currently the system controller.

An INSTR resource implementation of ControlREN for a GPIB system supports all documented modes.

ComponentVersion

A numeric version for this component.

SpecVersion

The VISA-defined version information for the specification version to which this component complies.

HardwareInterfaceName

The name of the hardware interface (GPIB, ASRL, etc.).

HardwareInterfaceNumber

The board number of the hardware interface.

HardwareInterfaceType

The type number of the hardware interface.

LockState

The current locking state of the interface.

OptionString

The option string corresponding to the current state of the resource.

ProgID

The programmatic ID that can be used by COM to create this object.

ResourceName

The VISA resource name of the currently open resource. This name is the canonical version of the resource name and therefore may vary from the resource string used to open/init the resource.

SessionType

The session type string, such as "INSTR" or "INTFC".

SoftwareManufacturerID

The ID number of the vendor of this software component.

SoftwareManufacturerName

The name of the vendor of this software component.

Timeout

The I/O timeout in milliseconds for I/O communication on this resource session.

LastStatus

The return value from the last method call on this interface. This property may be useful in Visual Basic, where positive return values, such as warnings and other non-error return values, cannot be retrieved.

See the Return Values page for a list of positive return values.

PrimaryAddress

Primary address of the GPIB device used by the given session.

RENState

The current state of the GPIB REN interface line.

RepeatAddressingEnabled

Specifies whether to use repeat addressing before each read or write operation.

SecondaryAddress

Secondary address of the GPIB device used by the given session.

UnaddressingEnabled

Specifies whether to unaddress the device (UNT and UNL) after each read or write operation.