IBWRTF

NI-488.2

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IBWRTF

Board-Level/Device-Level

Purpose

Write data to a device from a file.

Format

C

unsigned long ibwrtf (int ud, const char *flname)

Visual Basic

CALL ibwrtf (ud%, flname$)

status% = ilwrtf (ud%, flname$)

Interactive Control (Usage Notes)

ibwrtf flname

Input

ud	Board or device descriptor
flname	Name of file containing the data to be written

Output

Function Return

The value of Ibsta

Description

Device-Level

If ud is a device descriptor, ibwrtf addresses the GPIB and writes all of the bytes from the file flname to a GPIB device. The operation terminates normally when all of the bytes have been sent. The operation terminates with an error if all of the bytes could not be sent within the timeout period. The actual number of bytes transferred is returned in the global function Ibcnt.

Board-Level

If ud is a board descriptor, ibwrtf writes all of the bytes of data from the file flname to a GPIB device. A board-level ibwrtf assumes that the GPIB is already properly addressed. The operation terminates normally when all of the bytes have been sent. The operation terminates with an error if all of the bytes could not be sent within the timeout period, or if the board is not CIC, the CIC sends a Device Clear on the GPIB. The actual number of bytes transferred is returned in the global function Ibcnt.

Possible Errors

EABO Either the file could not be transferred within the timeout period, or a Device Clear message was received after the write operation began.

EADR Board-level: The GPIB is not correctly addressed; use ibcmd to address the GPIB.

Device-level: A conflict exists between the device GPIB address and the GPIB address of the device access board. Use the IbcPAD and IbcSAD options in ibconfig.

EARG flname is invalid.

EBUS Device-level: No devices are connected to the GPIB.

ECIC Device-level: The access board is not CIC. See Device-Level Calls and Bus Management.

EDVR The NI-488.2 driver is either configured incorrectly or is not properly installed.

EFSO ibwrtf could not access flname.

EHDL ud is invalid or out of range.

ELCK The requested operation could not be performed because of an existing lock by another process.

ENEB The interface is not installed or is not properly configured.

EOIP Asynchronous I/O is in progress.

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EABO	Either the file could not be transferred within the timeout period, or a Device Clear message was received after the write operation began.
EADR	Board-level: The GPIB is not correctly addressed; use ibcmd to address the GPIB.
	Device-level: A conflict exists between the device GPIB address and the GPIB address of the device access board. Use the IbcPAD and IbcSAD options in ibconfig.
EARG	flname is invalid.
EBUS	Device-level: No devices are connected to the GPIB.
ECIC	Device-level: The access board is not CIC. See Device-Level Calls and Bus Management.
EDVR	The NI-488.2 driver is either configured incorrectly or is not properly installed.
EFSO	ibwrtf could not access flname.
EHDL	ud is invalid or out of range.
ELCK	The requested operation could not be performed because of an existing lock by another process.
ENEB	The interface is not installed or is not properly configured.
EOIP	Asynchronous I/O is in progress.