KEPCO KLP Series Developer's Guide, Rev 1 - Manual (Page 121)

KLP 031113
B-15
FIGURE B-5. PROGRAMMING AS VOLTAGE STABILIZER
B.58 STATus:OPERation:CONDition? QUERY
STAT:OPER:COND?
Syntax: Short Form: STAT:OPER:COND? Long Form: STATus:OPERation:CONDition?
Return Value: 0 to 1313 (1 + 32 + 256 + 1024).
Description: Returns the value of the Operation Condition Register (see Table B-2). The Operation Condition
Register contains unlatched real-time information about the operating conditions of the power supply.
Bit set to 1 = function enabled (active, true); bit reset to 0 = function disabled (inactive, false). (See
example, Figure B-6.)
B.59 STATus:OPERation:ENABle COMMAND
STAT:OPER:ENAB
Syntax: Short Form:STAT:OPER:ENAB 0 to 1313 (1 + 32 + 256 + 1024)
Long Form:STATus:OPERation:ENABle 0 to 1313 (1 + 32 + 256 + 1024)
Description: Sets Operation Enable Register. The Operation Enable Register is a mask for enabling specific bits
in the Operation Event Register which will cause the operation summary bit (bit 7) of the Status Byte
register to be set. Bit set to 1 = function enabled (active, true); bit reset to 0 = function disabled (inac-
tive, false). The operation summary bit is the logical OR of all the enabled bits in the Operation Event
register. (See example, Figure B-6.)
NOTE: The following example assumes KLP 75-33-1200 with virtual model set for 36V, 33.33A and
output operating in voltage stabilization mode. See Figure B-3 for directions on programming
virtual model limits.
VOLT 21.8;CURR .5 Programs output voltage for 21.8V, output current for 0.5A.
OUTP ON Enables output. NOTE: Load determines output operating mode; if
load resistance is greater than 21.8/0.5, output will operate as
voltage stabilizer.
MEAS:VOLT? Returns measured output voltage, approximately 2.18E1 (21.8V)
assuming voltage stabilizer operation.
VOLT? Returns 2.18E1 ( (21.8V, programmed output voltage).
VOLT 2.15 Programs output voltage to 2.15V.
VOLT? Returns 2.15E0 (2.15V, programmed output voltage).
VOLT? MAX Returns 3.6E1 (36V, the virtual model voltage setting).
VOLT? MIN Returns 0 (minimum allowable program voltage).
VOLT:PROT 6.5 For this model, minimum overvoltage protection is 0.2 x 75 = 15V,
therefore power supply returns error message -222 (Data out of
range, ESR bit 4 =1) and the limit remains unchanged.
VOLT:PROT 25 Sets overvoltage protection limit to 25V.
VOLT:PROT? Returns 2.5E1 (25V).
VOLT 26 Returns error message -301 (Value bigger than limit, ESR bit 3=1)
and voltage setting remains unchanged at 2.15V.
VOLT:PROT?MAX Returns 9E1 (maximum allowable overvoltage protection limit for
model is 90V, 20% above maximum voltage (75V) for KLP 75-33-
1200, regardless of virtual model setting).
TABLE B-2. OPERATION CONDITION REGISTER, OPERATION ENABLE REGISTER,
AND OPERATION EVENT REGISTER BITS
CONDITION NU PR NU CC NU CV NU WTG NU CAL
BIT 15 14 11-13 10 9 8 7 - 6 5 4 - 1 0
VALUE 32,768 16,384
2048 -
8192
1024 512 256
128
- 64
32
16 -
2
1
CAL - POWER SUPPLY IN CALIBRATION MODE
CC -
POWER SUPPLY IN CONSTANT CURRENT
MODE
CV - POWER SUPPLY IN CONSTANT VOLTAGE
MODE
NU - NOT USED
PR - PROGRAM RUNNING
WTG - WAIT FOR TRIGGER (SET BY TRIG
SUBSYSTEM)