SECTION 5 REMOTE OPERATION
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SECTION 5
GPIB and REMOTE OPERATION
5 GPIB and SERIAL REMOTE OPERATION
This section describes remote control functions of the UPC for communication over the IEEE-488 BUS or
Serial Remote Interface. To select the proper commands for accurate setup and control of the UPC/power-
source system, a thorough understanding of the UPC capabilities is needed. It is strongly recommended
that the user read Section 4 (Front Panel Operation) to become familiar with the features and capabilities of
the UPC.
The UPC may be used in Local (front panel) or Remote (GPIB or SERIAL) control. The GPIB interface is
IEEE-488.1, IEEE-488.2 and SCPI compatible. A Serial port interface is available as an alternative remote
interface and commands are IEEE-488.2 and SCPI format compatible.
Most commands listed in this section are used with the both the GPIB and optional Serial Remote Interface.
See (10.0) for detailed information on the Serial Remote Interface.
5.1 INTRODUCTION
For GPIB communications, REMOTE CONTROL is established when control or programming commands
are sent to the UPC by a Bus Controller with REN (remote enable) set true. The REN line on the bus
interface must be held TRUE to maintain REMOTE CONTROL. REMOTE CONTROL can only be initiated
and maintained while the UPC is displaying a Metering display or while in the UPC STATUS display, but not
while manually editing any screen data. All front panel programming and signal controls are disabled while
REMOTE CONTROL is active, but metering information is still accessible for viewing at the front panel
display.
Status and metered data queries do not place the UPC into REMOTE CONTROL.
The front panel LOCAL key allows the user to restore LOCAL CONTROL unless the Bus controller has sent
the IEEE-488 - LOCAL LOCKOUT (LLO) message. The Bus Controller may restore LOCAL CONTROL by
sending the IEEE-488 - GOTO LOCAL (GTL) message.
Refer to (4.6.3.3) for setting the GPIB device address.
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