Instrument Access; Changing The Instrument Access Mode - Keithley 2450 Reference Manual

Section 3: Functions and features

Instrument access

You can specify that the control interfaces request access before taking control of the instrument.
There are several levels of access.
You can set one of the following levels of access to the instrument:
•
Full: Allows full access for all users from all interfaces
•
Exclusive: Allows access by one remote interface at a time with logins required from other
interfaces
•
Protected: Allows access by one remote interface at a time with passwords required on all
interfaces
•
Lockout: Allows access by one interface (including the front panel) at a time with passwords
required on all interfaces
When you set access is full, the instrument accepts commands from any interface with no passwords
required. You can change interfaces as needed.
When you set access is set to exclusive, you must log out of one remote interface and log into
another one to change interfaces. To use another interface, log out of the present interface before
logging into the new interface. You do not need a password with this access.
Protected access is similar to exclusive access, except that you must enter a password when logging
in.
When the access is set to locked out, a password is required to change interfaces, including the front
panel interface.

Changing the instrument access mode

To change the access mode from the front panel:
1. Press the MENU key.
2. Under System, select Settings. the SYSTEM SETTINGS menu opens.
3. Press the button next to Access Mode.
4. Select the level of password access control you want to enable.
Using SCPI commands
Send the command that is appropriate for the level of access you want to enable:
SYSTem:ACCess FULL
SYSTem:ACCess EXCLusive
SYSTem:ACCess PROTected
SYSTem:ACCess LOCKout
Using TSP commands
Send the command that is appropriate for the level of access you want to enable:
localnode.access = localnode.ACCESS_FULL
localnode.access = localnode.ACCESS_EXCLUSIVE
localnode.access = localnode.ACCESS_PROTECTED
localnode.access = localnode.ACCESS_LOCKOUT
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Model 2450 Interactive SourceMeter® Instrument Reference Manual
2450-901-01 Rev. B/September 2013