Send, Send -18 – Measurement Computing GPIB-488 User Manual
Page 86
Chapter 4
GPIB 488.2 Library Reference
4-18
GPIB-488
Send
Sends data to one GPIB device.
Syntax
C
Send (int board, short address,char data[],
long count, int eotmode)
Parameters
board
is an integer which identifies the GPIB board to be used for this operation. In most
applications, this value is 0.
address
is an integer representing the GPIB address of the device to receive the data.
data
is the string of data which is sent to the device.
count
specifies the maximum number of data bytes which are to be sent to the device.
eotmode
is the flag used to signal the end of data.
Returns
ibsta
will contain a 16-bit status word as described in Appendix B,
.
iberr
will contain an error code, if an error occurred.
Usage Notes
When this routine is executed, the specified GPIB board is addressed as a Talker, the
designated GPIB device is addressed as a Listener and the number of bytes (specified by
count
) in
data
is sent. Values for
eotmode
are:
•
NLend
—Send NL (Line Feed) with EOI after last data byte.
•
DABend
—Send EOI with the last data byte in the string.
•
NULLend
—Do not mark the end of the transfer.
These constants are defined in the header file.
Example
In this example, GPIB board 0 sends an identification query to the GPIB device at address 3.
End of data is signalled by an EOI.
C
Send (0, 3, "*IDN?", DABend)