User`s guide

124 Agilent VISA User’s Guide
4 Programming via GPIB and VXI
/* Print the results. */
printf( "inData16 : 0x%04hx\n", inData16 );
printf( "peekData16: ox%04hx\n", peekData16
);
viClose( vi );
viClose (drm );
}
MEMACC Attribute Descriptions
Generic MEMACC Attributes
The following read- only attributes (VI_ATTR_TMO_VALUE is
read/write) provide general interface information.
Table 27 Attributes That Provide General Interface Information
Attribute Description
VI_ATTR_INTF_TYPE Interface type of the given session.
VI_ATTR_INTF_NUM Board number for the given interface.
VI_ATTR_TMO_VALUE Minimum timeout value to use, in milliseconds.
A timeout value of VI_TMO_IMMEDIATE
means operation should never wait for the
device to respond. A timeout value of
VI_TMO_INFINITE disables the timeout
mechanism.
VI_ATTR_INTF_INST_NAME Human-readable text describing the given
interface.
VI_ATTR_DMA_ALLOW_EN Specifies whether I/O accesses should use
DMA (VI_TRUE) or Programmed I/O
(VI_FALSE).