Instrument Control Toolbox

The VISA-GPIB Address

The VISA-GPIB address consists of

• The board index of the GPIB controller installed in your computer.
• The primary address and secondary address of the instrument. Valid primary addresses range from 0 to 30. Valid secondary addresses range from 0 to 30, where the value 0 indicates that the secondary address is not used.

You must specify the primary address value via the resource name during VISA-GPIB object creation. Additionally, you must include the board index and secondary address values as part of the resource name if they differ from the default value of 0.

The properties associated with the GPIB address are given below.

Table 4-2: VISA-GPIB Address Properties 

Property Name	Description
BoardIndex	Specify the index number of the GPIB board.
PrimaryAddress	Specify the primary address of the GPIB instrument.
SecondaryAddress	Specify the secondary address of the GPIB instrument.

The BoardIndex, PrimaryAddress, and SecondaryAddress properties are automatically updated with the specified resource name values when you create the VISA-GPIB object.

You can display the address property values for the VISA-GPIB object vg created in Creating a VISA-GPIB Object with the get function.

• get(vg,{'BoardIndex','PrimaryAddress','SecondaryAddress'})
  ans = 
      [0]    [1]    [0]
  

The GPIB Interface

The VXI Interface