KEPCO KLP SERIES, Operator'S Manual

Page: 88 / 110

B-2
KLP 073008
B.2 NUMERICAL VALUES
The SCPI data parser on the KLP supports a maximum of 8 digits after the decimal point and a maximum inte-
ger of 4 x 10
8
. Any values greater than these are not processed by the device and no error is generated. The
largest string that can be received or transmitted by the KLP is 253 characters.
All numerical data is returned in scientific notation, digits with decimal point and Exponent, e.g., 2.71E1 for 27.1
after calibration constants have been applied. Thus. for example, VOLT 14;VOLT? may return 1.39997E1
which indicates that the unit has been calibrated to provide 13.9997V for a programmed value of 14V, within
the calculation accuracy of the KLP. Error “-120” results from syntactical errors, e.g., the exponent exceeds 8,
a letter is identified, etc. Error “-222” is produced if the value exceeds the range of acceptable values for the
parameter.
B.3 ABORt COMMAND
ABOR
Syntax: Short Form: ABOR Long Form: ABORt
Description: Cancels previously stored trigger levels, resets WTG. The ABORt command cancels any pending
trigger levels previously stored by the CURR:TRIG or VOLT:TRIG commands. The pending level is
set equal to the corresponding immediate value. ABORt also resets the WTG (Wait TriGger) bit in the
Operation Condition status register. If INIT:CONT ON has been programmed, the trigger system re-
arms itself immediately after ABORt, thereby setting WTG. WTG is bit 5 in the STATUS OPERATION
CONDITION register. The ABORt is executed each time power is turned on. Related Commands:
INIT, *RST, *TRG. (See example, Figure B-1.)
B.4 CAL COMMANDS AND QUERIES
CAL
CAL commands and queries are used to perform calibration of the unit via the control interface. These
commands must be issued in a specific sequence in order to properly calibrate the unit. To use these
commands, refer to Kepco’s website (www.kepcopower.com/drivers) and download the LabWindows/
CVI Version 5 driver for KLP. This file provides remote calibration capability and uses the following
supported commands and queries:
CAL:CEXT command
CAL:CGA command
CAL:CURR:LEV command
CAL:CURR[:DATA] command
CAL:DPOT command
CAL:SAVE command
CAL:STAT command and query
CAL:VEXT command
CAL:VGA command
CAL:VOLT:LEV command
CAL:VOLT[:DATA] command
CAL:ZERO command
B.5 DISPlay:TEXT? QUERY
DISP:TEXT?
Syntax: Short Form: DISP:TEXT? Long Form: DISPlay:TEXT]?
Return Value: Character string displayed on front panel Status display.
Description: Returns the text displayed on front panel Status display. Returns the character string displayed
on Status display.
B.6 INITiate[:IMMediate] COMMAND
INIT[:IMM]
Syntax: Short Form: INIT:[IMM] Long Form: INITiate[:IMMediate]
Description: Enables a single trigger. If INIT:CONT is OFF, then INIT[:IMM] arms the trigger system for a single
trigger. If INIT:CONT is ON, then the trigger system is continuously armed and INIT[:IMM] is redun-
dant. This command enables a single trigger. A GPIB <GET>, *TRG command completes the
sequence. Upon receipt of the <GET>, *TRG command, the power supply will return to the pro-
grammed values of voltage and current established by the VOLT:TRIG and CURR:TRIG commands.
After a GPIB <GET>, *TRG command has been received, subsequent GPIB <GET>, *TRG com-
mands have no effect unless preceded by INIT or INIT:CONT ON. Related Commands: <GET>,
*RST, *TRG. (See example, Figure B-1.)