Measurement Computing Personal488 rev.3.0 For DOS & Windows 3.Xi - Manual (Page 345)

15B. Driver488/SUB, W31, W95, & WNT III. COMMAND REFERENCES - 15. Command References
III-330 Personal488 User’s Manual, Rev. 3.0
The LightPen command disables the detection of interrupts via setting the light pen status. The
default is light pen interrupt enabled.
Listen
SYNTAX int pascal Listen(DevHandleT devHandle, char pri, char sec);
devHandle refers to either an IEEE 488 interface or an external device. If
devHandle refers to an external device, the command acts on the associated
interface.
pri and sec specify the primary and secondary addresses of the device which is
to be addressed to listen.
RETURNS -1 if error
MODE CA
BUS STATES ATN, LAG
SEE ALSO Talk, SendCmd, SendData, SendEoi, FindListeners
EXAMPLES errorcode = Listen (ieee, 12, -1);
The Listen command addresses an external device to Listen.
Local
SYNTAX int pascal Local(DevHandleT devHandle);
devHandle refers to either an IEEE 488 interface or an external device.
RETURNS -1 if error
MODE SC
BUS STATES *REN
SEE ALSO Remote, AutoRemote
EXAMPLES errorcode = Local(ieee); To unassert the Remote Enable (REN) line,
the IEEE 488 interface is specified.
errorcode = Local(wave); To send the Go To Local (GTL) command,
an external device is specified.
In the System Controller mode, the Local command issued to an interface device, causes Driver488 to
unassert the Remote Enable ( REN ) line. This causes devices on the bus to return to manual operation.
A Local command addressed to an external device, places the device in the local mode via the Go To
Local ( GTL ) bus command.
LocalList
SYNTAX int pascal LocalList(DevHandlePT devHandles);
devHandles refers to a pointer to a list of external devices.
RETURNS -1 if error
MODE CA
BUS STATES ATN
•UNL, MTA, LAG,GTL
SEE ALSO Local, Remote, RemoteList, AutoRemote
EXAMPLES deviceList[0] = wave;
deviceList[1] = timer;
deviceList[2] = dmm;
deviceList[3] = NODEVICE;
errorcode = LocalList(deviceList); To send the Go To Local
(GTO) bus command to a
list of external devices.
In the System Controller mode, the LocalList command issued to an interface device, causes
Driver488 to unassert the Remote Enable ( REN ) line. This causes devices on the bus to return to
manual operation. A LocalList command addressed to an external device, places the device in the
local mode via the Go To Local ( GTL ) bus command.