SendCmds Function

Sends GPIB command bytes.

You normally do not need to use SendCmds for GPIB operation. Use it when specialized command sequences, not provided for in other functions, must be sent over the GPIB.

Refer to GPIB Function Defaults for more information about the timeout and address defaults.

Refer to GPIB Multiline Interface Messages for more information about available commands.


icon

Inputs/Outputs

  • ci32.png bus

    bus refers to the GPIB bus number. If you have only one GPIB interface in your computer, the default bus number is 0.

    Refer to the software installation instructions included with the GPIB controller for additional GPIB interfaces.
  • cstr.png command string

    command string contains the command bytes the function sends over the GPIB.

  • cerrcodeclst.png error in

    error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

  • i1dbool.png status

    status is a Boolean array in which each bit describes a state of the GPIB Controller.

    If an error occurs, the function sets bit 15. GPIB error is valid only if bit 15 of status is set.

    The following table shows the numeric value and symbolic status of each bit in status. This table also includes a description of each bit.

    Status BitNumeric ValueSymbolic StatusDescription
    01DCASDevice Clear state
    12DTASDevice Trigger State
    24LACSListener Active
    38TACSTalker Active
    416ATNAttention Asserted
    532CICController-In-Charge
    664REMRemote State
    7128LOKLockout State
    8256CMPLOperation Completed
    124096SRQISRQ Detected while CIC
    138192ENDEOI or EOS Detected
    1416384TIMOTimeout
    15-32768ERRError Detected
  • ii32.png byte count

    byte count refers to the number of bytes that pass over the GPIB.

  • ierrcodeclst.png error out

    error out contains error information. This output provides standard error out functionality.