GPIB Misc

Performs the GPIB operation indicated by command string. Use this low-level function when the other high-level, traditional GPIB functions are not suitable.

command string The following table shows the functions you can specify in command string.

Device Functions Description
loc address Go to local.
off address Take device offline.
pct address Pass control.
ppc byte address Parallel poll configure (enable or disable).
cac 0/1 Become active Controller.
cmd string Send IEEE 488 commands.
dma 0/1 Set DMA mode or programmed I/O mode.
gts 0/1 Go from active Controller to standby.
Ist 0/1 Set individual status bit.
llo Local lockout.
loc Place Controller in local state.
off Take controller offline.
ppc byte Parallel poll configure (enable or disable).
ppu Parallel poll unconfigure all devices.
rpp Conduct parallel poll.
rsc 0/1 Request or release system control.
rsv byte Request service and/or set the serial poll status byte.
sic Send interface clear and set remote enable.
sre 0/1 Set or clear remote enable.
To specify the GPIB Controller used by this function, use a command string in the form, ID: xxx, where ID is the GPIB Controller (bus number) and xxx is the three-character command and its corresponding arguments, if any. If you do not specify a Controller ID, LabVIEW assumes 0.

Refer to GPIB Device and Controller Functions for more information.

error in describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurs before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
output string is the response the function returns when you conduct a parallel poll with the rpp command string.
status is a Boolean array in which each bit describes a state of the GPIB Controller. If an error occurs, the GPIB function sets bit 15. GPIB error is valid only if bit 15 of status is set. Refer to the GPIB Status function for more information about status bits and GPIB error codes.
error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.