KEPCO MBT Series - Manual (Page 140)

B-8
MBTSVC 111609
FIGURE B-5. USING STATUS COMMANDS AND QUERIES
B.28 STATus:QUEStionable[:EVENt]? QUERY
STAT:QUES?
Syntax: Short Form: STAT:QUES[EVEN]? Long Form: STATus:QUEStionable[EVENT]?
Return Value: actual register value
Description: Indicates questionable events that occurred since previous STAT:QUES? query. Returns the
value of the Questionable Event register (see Table B-3). The Questionable Event register is a
read-only register which holds (latches) all events. Reading the Questionable Event register clears it.
(See example, Figure B-5.)
B.29 STATus:QUEStionable:CONDition? QUERY
STAT:QUES:COND?
Syntax: Short Form: STAT:QUES:COND? Long Form: STATus:QUEStionable:CONDition?
Return Value: actual register value
Description: Returns the value of the Questionable Condition Register (see Table B-3). The Questionable
Condition Register contains unlatched real-time information about questionable conditions of the
power supply. Bit set to 1 = condition (active, true); bit reset to 0 = condition (inactive, false). (See
example, Figure B-5.)
NOTE: The selected power supply is assumed to be operating in cV (constant voltage) mode.
STAT:OPER:ENAB 1056 Mask enabled for CC, WTG and bits.
STAT:OPER:ENAB? Returns 1056 (32 + 1024) (CC, WTG bits set).
STAT:QUES:ENAB 3 Mask enabled for OV and OC bits (1 + 2).
STAT:QUES:ENAB? Returns 3 (1 + 2) indicating OV and OC bits are enabled.
STAT:PRES Operation Condition and Questionable Condition registers are
reset.
INIT:CONT ON Continuous triggers enabled.
STAT:OPER:COND? Power supply returns 288 (256 + 32) to indicate that power
supply is constant voltage mode and Wait For Trigger is true.
STAT:OPER? Returns 1057, e.g., indicating that since the last reading of the
Operation Event Register the power supply has entered
Constant Current mode, the Wait Trigger was set.
STAT:OPER? Returns 0 indicating no changes since previous reading of the
Operation Event register.
STAT:QUES? Returns 0 (no questionable conditions occurred since previous
reading
--- OVERCURRENT CONDITION OCCURS
STAT:QUES? Returns 2 (overcurrent protection tripped since the last
STAT:QUES? query).
STAT:QUES:COND? Returns 2, (Power supply still in overcurrent protection state).
STAT:QUES? Returns 0, (Register cleared by previous STAT:QUES?).
STAT:QUES:COND? Returns 2, (Power supply still in overcurrent protection state).
SYST:ERR? Power supply returns 0,“No error” message.
INST:SEL 1 Select instrument 1
STAT:QUES? MBT responds 4 indicating instrument 1 in current mode
INST:SEL 2 Select instrument 2
STAT:QUES? MBT responds 8 indicating instrument 2 in voltage mode
STAT:QUES:INST:ISUM1? MBT responds 4 indicating instrument 1 in current mode
STAT:QUES:INST:ISUM2? MBT responds 8 indicating instrument 2 in voltage mode