ITech IT6833A - Chapter 3: Functions and Characteristics; 3.2 Voltage and Current Settings

SCPI Status Register
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can’t changed by re-setting order (* RST) or equipment restart, but if
query the data in event register or send clear order *CLS(clear status),
the event register will be automatically cleared. The main content which
the standard event register records is: whether power output is turned on,
order syntax errors, order execution errors, self-test or calibration errors,
query errors and so on.
Bit
Decimal
Value
Definition
0
OPC
1
Operation Complete. All commands prior to and
including an *OPC command have been
executed.
1
Not
Used
0
Always set to 0.
2
QYE
4
Query Error. The power supply tried to read the
output buffer but it was empty. Or new
command line was received before a previous
query had been read. Or both the input and
output buffers are full.
3
DDE
8
Device Error. A self-test or calibration error
occurred (see error numbers 601 through 750 in
chapter 5).
4
EXE
16
Execution Error. An execution error occurred (see
error numbers -211 through -224 in chapter 5).
5
CME
32
Command Error. A command syntax error
occurred (see error numbers -101 through -178 in
chapter 5).
6
Not
Used
0
Always set to 0.
7
PON
128
Power On. Power has been turned off and on
since the
last time the event register was read or cleared
Query status register provide some information of the power, such as
over voltage, over temperature, over current. You can also monitor the
change of the constant current and voltage status via the register, for
example, data bit 0 is the constant current mode of the power supply,
data bit 1 is constant voltage mode of the power supply and so on.
Bit
Decimal
Value
Definition
0
Voltage
1
The power supply is/was in the constant
current mode.
1
Current
2
The power supply is/was in the constant
voltage mode.
2-3
Not used
0
Always set to 0.
4
Over
temperature
16
The fan has a fault condition.
5-8
Not used
0
Always set to 0.
9
Over voltage
512
The overvoltage protection circuit has
tripped.
10
Over Current
1024
The over current protection circuit has
tripped.
11-15
Not used
0
Always set to 0.
Status byte register records the information of other registers. The query data is
temporally stored in the output buffer of the power supply, and feedback to