User manual

General commands are those commands, such as DCL, that have the same general
meaning regardless of the instrument. Table 4-3 lists the general bus commands along with
the programming statement for each command, which use the Keithley KPC-488.2 IEEE in
-
terface and the HP- style Universal Language Driver. Note that the commands requiring that
the primary address be specified assume that the address is the factory-set address of 16.
REN (remote enable)
The remote enable command is sent to the Model 2000 by the controller to set up the in-
strument for remote operation. Generally, the instrument should be placed in the remote
mode before you attempt to program it over the bus. Simply setting REN true does not ac-
tually place the instrument in the remote state. You must address the instrument to listen af-
ter setting REN true before it goes into remote.
Note that the instrument need not be in remote to be a talker.
Program fragment
PRINT #1, "remote 16" 'Place the Model 2000 in re-
mote; turn on REM annunciator
Note that all front panels controls except for LOCAL (and POWER) are inoperative while
the instrument is in remote. You can restore normal front panel operation by pressing the
LOCAL key.
The IFC command is sent by the controller to place the Model 2000 multimeter in the lo-
cal, talker, listener idle states. The unit responds to the IFC command by canceling front pan-
el TALK or LSTN lights, if the instrument was previously placed in one of those states.
Table 4-3
General bus commands and associated statements
Command
Programming
statement
Effect on Model 2000 Multimeter
REN
IFC
LLO
GTL
DCL
SDC
GET
SPE, SPD
REMOTE 16
ABORT
LOCAL LOCKOUT
LOCAL 16
LOCAL
CLEAR
CLEAR 16
TRIGGER 16
SPOLL 16
Goes into effect when next addressed to listen.
Goes into talker and listener idle states.
LOCAL key locked out.
Cancel remote; restore front panel operation for the 2000.
Cancel remote; restore front panel operation for all devices.
Return all devices to known conditions.
Returns Model 2000 to known conditions.
Initiates a trigger.
Serial Polls the Model 2000.
2000-900 (J - Aug 2010) BOOK.fm Page 14 Wednesday, October 12, 2011 12:29 PM