KEPCO KLR Series Developers Guide - Manual (Page 115)

KLR-DEV 060713
B-13
B.49 [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPLitude]? QUERY
VOLT?
Syntax: Short Form: [SOUR:]VOLT[:LEV][:IMM][:AMPL]? {MIN | MAX}
Long Form: [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPLitude]? {MIN | MAX}
Description: Identifies programmed voltage, maximum allowable voltage, or minimum voltage (always 0).
The VOLT? query returns the programmed value of voltage. Actual output voltage will depend on load
conditions. The VOLT? MAX query returns the maximum voltage allowed for a particular model (the
lower of VOLT:LIM:HIGH and 80% of VOLT:PROT). VOLT? MINReturns minimum voltage allowed for
power supply (always 0). Related Commands: VOLT. (See example, Figure B-5.)
B.50 [SOURce:]VOLTage:LIMit:HIGH COMMAND
VOLT:LIM:HIGH
Syntax: Short Form: [SOUR:]VOLT:LIM:HIGH <exp_value> [MAX]
Long Form: [SOURce:]VOLTage:LIMit:HIGH <exp_value> [MAX]
<exp_value> = digits with decimal point and Exponent, e.g., 2.71E+1 for 27.1
Description: Sets Limit Model maximum programmable limit for power supply output voltage.
VOLT:LIM:HIGH <exp_value> sets maximum voltage that can be programmed. VOLT:LIM:HIGH MAX
sets maximum programmable limit of the unit to the rated maximum (e.g., 75V for KLR 75-32). This
command is password protected, requiring SYST:PASS:CEN prior to execution.
After executing VOLT:LIM:HIGH, the Output is set to OFF and overvoltage protection (VOLT:PROT) is
recalculated to be 20% above the VOLT:LIM:HIGH setting. Previously stored trigger levels are reset to
zero volts and minimum current. Stored settings (PAR. A.13) or programmed sequences using the
LIST commands may be outside the range established by the new limit model. In this case, prior to
execution, the value is cleared to the default minimum (zero volts) and -222, “Data out of range” error
message is generated.
If the value is out of the acceptable voltage range for the power supply model, error message
-222,”Data out of range” is posted in the output queue. If the user tries to set an output voltage value
larger than the VOLT:LIM:HIGH setting, a value corresponding to the VOLT:LIM:HIGH will be pro-
grammed and error message -301,”Value bigger than limit” is posted in the output queue. Once the
limit is established, the unit will not allow values higher than the programmed limit. Related Com-
mands: VOLT, VOLT:PROT, SYST:PASS:CEN. (See example, Figure B-3.)
B.51 [SOURce:]VOLTage:LIMit:HIGH? QUERY
VOLT:LIM:HIGH?
Syntax: Short Form: [SOUR:]VOLT:LIM:HIGH? [MIN | MAX]
Long Form: [SOURce:]VOLTage:LIMit:HIGH? [MIN | MAX]
Return Value: <exp_value> = digits with decimal point and Exponent, e.g., 2.71E+1 for 27.1
Description: Returns value representing Limit Model voltage limit. VOLT:LIM:HIGH? returns the voltage limit
programmed by VOLT:LIM:HIGH. VOLT:LIM:HIGH? MAX returns the rated maximum programmable
voltage for that model (e.g., 75 (Volts) for KLR 75-32. VOLT:LIM:HIGH? MIN returns the minimum
allowable voltage that can be programmed. Related Commands: VOLT:LIM:HIGH, VOLT. (See exam-
ple, Figure B-5.)