Installation and Configuration
Remote/Local Operation
While in remote mode, you can change to local mode operation by pressing the front panel LOCAL button, by sending the GPIB GTL (Go to Local) command, or by negating the GPIB REN (Remote Enable) line. You can disable the LOCAL button by enabling the GPIB Local Lockout (LLO) condition. For an example of how to use LLO, see “Setting Local Lockout”.
To return to remote mode, ensure that the REN line is asserted and then send any valid GPIB or
Local Mode In local mode operation, you set the voltage and current output levels and the OVP Operation trip level with controls located on the front panel. Refer to the operating manual for
a description of the functions available at the front panel.
While in local mode operation, you can change power supply control to remote mode by ensuring that the GPIB REN line is asserted and then sending any software command to get into remote mode and the OUT ON command to restore the output. You can return to local mode by pressing the front panel LOCAL button, unless Local Lockout is in effect. If LLO is in effect, use the GPIB GTL command to send the power supply into local mode, or negate the REN line to turn off LLO and return the power supply to local mode.
Example: |
|
ibfind "devname" | Address the unit (devname or device name as |
| configured originally with ibconf). |
ibloc | Set unit to local mode. |
ibwrt"id?" | Any message to the unit now puts it back to |
| remote mode. |
ibloc | Toggle back to local mode. |
Setting Local Use the GPIB Local Lockout command to disable the front panel LOCAL switch. Lockout With LLO in effect, you cannot return to local control by pressing the front panel LOCAL switch. You can still return to local mode by sending the GTL command.
To turn off LLO and return the power supply to local mode, negate the REN line. The LLO condition can only be removed by negating the asserted REN line.
Example: |
|
ibfind GPIB0 | Address the computer controller |
ibsic | Put the controller in charge by sending an Interface |
| Clear. |
ibsre1 | Assert the Remote Enable line. |
Release 3.1 | 27 |