Keithley 2601B Reference Manual page 130

Section 2: General operation
General bus commands
Command
REN
IFC
LLO
GTL
DCL
SDC
GET
SPE, SPD
REN
The remote enable (REN) command is sent to the Series 2600B by the controller to set up the
instrument for remote operation. Generally, the instrument should be placed in the remote mode
before you attempt to program it over the bus. Setting REN true does not place the instrument in the
remote state. You must address the instrument to listen after setting REN true before it goes into
remote operation.
IFC
The interface clear (IFC) command is sent by the controller to place the Series 2600B in the talker
idle state and the listener idle state. The instrument responds to the IFC command by canceling front-
panel TALK or LSTN lights, if the instrument was previously placed in one of these states.
Transfer of command messages to the instrument and transfer of response messages from the
instrument are not interrupted by IFC. If transfer of a response message from the instrument was
suspended by IFC, transfer of the message will resume when the instrument is addressed to talk. If
transfer of a command message to the instrument was suspended by IFC, the rest of the message
can be sent when the instrument is addressed to listen.
LLO
When the instrument is in remote operation, all front-panel controls are disabled, except the LOCAL
and OUTPUT OFF keys (and the POWER switch). The local lockout (LLO) command disables the
LOCAL key, but does not affect the OUTPUT OFF key, which cannot be disabled.
GTL
Use the go to local (GTL) command to put a remote-mode instrument into local mode. Leaving the
remote state also restores operation of all front-panel controls.
2-106
Series 2600B System SourceMeter® Instrument Reference Manual
Effect on Series 2600B
Goes into remote operation when next addressed to listen. See
for details.
Goes into talker and listener idle states. See
LOCAL key locked out. See
Cancel remote; restore Series 2600B front-panel operation. See
for details.
Returns the Series 2600B and all devices on the GPIB to known conditions. See
(on page 2-107) for details.
Returns the Series 2600B to known conditions. See
Initiates a trigger. See GET
Serial polls the Series 2600B. See
IFC (on page 2-106) for details.
LLO (on page 2-106) for details.
SDC
(on page 2-107) for details.
SPE, SPD (on page 2-107) for details.
REN (on page 2-106)
GTL (on page 2-106)
DCL
(on page 2-107) for details.
2600BS-901-01 Rev. B / May 2013