Model 6517B Electrometer Reference Manual Section 11: Remote operations
6517B-901-01 Rev. C / August 2015 11-7
GPIB primary address selection
The Model 6517B is shipped from the factory with a pre-programmed primary address of 27. The
primary address may be set to any value between 0 and 30 as long as address conflicts with other
instruments are avoided. Note that controllers are also given a primary address, so do not use that
address either. Most frequently, controller addresses are 0 or 21, but you should consult the
controller's instruction manual for details. Whatever primary address you choose, you must make
certain that it corresponds with the value specified as part of the controller's programming language.
To check the present primary address or to change to a new one, perform the following procedure:
1. Display the MAIN MENU by pressing the MENU key.
2. Use the cursor keys to place the cursor on COMMUNICATION and press ENTER. The
COMMUNICATIONS SETUP menu is displayed.
3. Place the cursor on GPIB and press ENTER. If you are switching from the RS-232 interface to
the GPIB interface, the instrument is reset to the power-on defaults. In this case, you must repeat
steps 1, 2 and 3 to display the GPIB/PRINTER SETUP menu.
4. Place the cursor on ADDRESS and press ENTER.
5. The current primary address of the instrument is displayed. For example, if the instrument is set
to primary address 27, the following message is displayed: ADDRESS = 27 (0-30).
6. To retain the displayed address, press EXIT three times to return the instrument to the
measurement display state.
7. To change the primary address, use the cursor keys and the RANGE keys to display the new
address value (0 to 30). (Each device on the bus must have a unique primary address. Failure to
observe this precaution will probably result in erratic bus operation.) The cursor keys control
cursor position and the RANGE keys increment and decrement the selected digit.
8. With the desired address value displayed, press ENTER. The address is stored in nonvolatile
memory. That is, it is not lost when the instrument is turned off.
9. Press EXIT two times to return to the measurement display state.
General bus commands
General bus commands are those commands, such as DCL, that have the same general meaning
regardless of the instrument. The following table lists the general bus commands.
General bus commands
Command Effect on Model 6517B
REN
IFC
LLO
GTL
DCL
SDC
GET
SPE, SPD
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 6517B
Cancel remote, restore front panel operation for all
devices
Returns all devices to known conditions
Returns Model 6517B to known conditions
Initiates a trigger
Serial Polls the Model 6517B
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