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Advanced GPIB Initialization and Misc Functions and VISA Functions

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    Last Modified: August 2, 2018

    The following table maps advanced GPIB Initialization and Misc functions to the equivalent VISA functions.

    Table 1. Advanced GPIB Initialization and Misc Functions and VISA Functions
    GPIB Action GPIB Function VISA Action VISA Function
    LabVIEW LabVIEW NXG Inputs Outputs LabVIEW NXG Inputs Outputs
    GPIB Initialization:
    • Require readdressing
    • require readdressing
    • address string
    		VISA Property
    • session in (Instrument)
    • Readdress

      To get or set property—Instrument properties»GPIB Settings»Readdressing

    • session out
    GPIB Initialization:
    • Assert REN with IFC
    • assert REN when IFC
    • address string
    		VISA Send Remote Local Command
    • session in (GPIB Board Interface)
    • mode:
      • Assert REN
      • Deassert REN
    • session out
    GPIB Initialization:
    • System Controller
    • system controller
    • address string
    		VISA Property
    • session in (GPIB Board Interface)
    • SysCntrl State

      To get or set property—GPIB Board Interface»GPIB Settings»System Controller State

    • session out
    GPIB Initialization:
    • IST bit sense (Individual Status bit)
    • address string
    • IST bit sense
    		VISA action does not support Parallel Poll calls
    GPIB Initialization:
    • Disallow DMA
    • address string
    • disallow DMA
    		VISA Property
    • session in (GPIB Board Interface, Instrument)
    • Allow DMA
      To get or set property—
      • GPIB Board Interface»General Settings»Allow DMA Transfers
      • Instrument»General Settings»Allow DMA Transfers
    • session out
    GPIB Misc:
    • command to Become Active Controller
    • command string: "cac [0/1]"
    • output string
    • status
    		VISA GPIB Control ATN
    • session in (GPIB Board Interface)
    • mode:
      • Assert ATN
      • Assert ATN Immediately
    • session out
    GPIB Misc:
    • command to Send IEEE 488 commands
    • command string: "cmd [string]" (refer to the IEEE 488 Command Messages table for possible command strings)
    • output string
    • status
    		VISA GPIB Send Command
    • session in (GPIB Board Interface)
    • command (refer to the IEEE 488 Command Messages table for possible command strings)
    • session out
    • return count
    GPIB Misc:
    • command to set DMA or programmed I/O mode
    • command string: "dma [0/1]"
    • output string
    • status
    		VISA Property
    • session in (GPIB Board Interface, Instrument)
    • Allow DMA
      To get or set property—
      • GPIB Board Interface»General Settings»Allow DMA Transfers
      • Instrument»General Settings»Allow DMA Transfers
    • session out
    GPIB Misc:
    • command to go from active controller to standby
    • command string: "gts [0/1]"
    • output string
    • status
    		VISA GPIB Control ATN
    • session in (GPIB Board Interface)
    • mode:
      • Deassert ATN
      • Deassert ATN with Handshake
    • session out
    GPIB Misc:
    • command to set Individual Status Bit
    • command string: "ist [0/1]"
    • output string
    • status
    		VISA action does not support Parallel Poll calls
    GPIB Misc:
    • command for Local lockout
    • command string: "llo"
    • output string
    • status
    		VISA Send Remote Local Command
    • session in (GPIB Board Interface)
    • mode:
      • Local Lockout (Addressed Devices)
    • session out
    GPIB Misc:
    • command to place controller in Local State
    • command string: "loc"
    • output string
    • status
    		VISA action does not support this call
    GPIB Misc:
    • command to go to Local for an instrument
    • command string: "loc [address]"
    • output string
    • status
    		VISA Send Remote Local Command
    • session in (Instrument)
    • mode:
      • Local
      • Local without Lockout
    • session out
    GPIB Misc:
    • command to take controller offline
    • command string: "off"
    • output string
    • status
    		VISA Close
    • session in (GPIB Board Interface)
    GPIB Misc:
    • command to take device offline
    • command string: "off [address]"
    • output string
    • status
    		VISA Close
    • session in (Instrument)
    GPIB Misc:
    • command to pass control
    • command string: "pct [address]"
    • output string
    • status
    		VISA GPIB Pass Control
    • session in (GPIB Board Interface)
    • primary address
    • secondary address
    • session out
    GPIB Misc:
    • command for parallel poll configure (enable and disable)
    • command string: "ppc [byte]"
    • output string
    • status
    		VISA action does not support Parallel Poll calls
    GPIB Misc:
    • command for parallel poll configure
    • command string: "ppc [byte address]"
    • output string
    • status
    		VISA action does not support Parallel Poll calls
    GPIB Misc:
    • command for parallel poll unconfigure
    • command string: "ppu"
    • output string
    • status
    		VISA action does not support Parallel Poll calls
    GPIB Misc:
    • command to conduct parallel poll
    • command string: "rpp"
    • output string
    • status
    		VISA action does not support Parallel Poll calls
    GPIB Misc:
    • command to release or request system control
    • command string: "rsc [0/1]"
    • output string
    • status
    		VISA Property
    • session in (GPIB Board Interface)
    • SysCntrl State

      To get or set property—GPIB Board Interface»GPIB Settings»System Controller State

    • session out
    GPIB Misc:
    • command to request service and/or set the serial poll status byte
    • command string: "rsv [byte]"
    • output string
    • status
    		VISA Property
    • session in (GPIB Board Interface)
    • Device STB

      To get or set property—GPIB Board Interface»Message Based Settings»Device Status Byte

    • session out
    GPIB Misc:
    • command to send interface clear
    • command string: "sic"
    • output string
    • status
    		VISA GPIB Send Interface Clear
    • session in (GPIB Board Interface)
    • session out
    GPIB Misc:
    • command to assert or unassert remote enable
    • command string: "sre [0/1]"
    • output string
    • status
    		VISA Send Remote Local Command
    • session in (GPIB Board Interface)
    • mode:
      • Assert REN
      • Deassert REN
    • session out

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