ITech IT6942A - Chapter2 SCPI Status Register

SCPI Status Register
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Chapter2 SCPI Status Register
IT6900A series power records variable instrument status via three kinds of
status register, the three kinds of registers are standard event register, query
status register and status bytes register. Status byte register records the
information of other status registers.
Event register is read only register, used to
store the implementation status
of the power, the data used in the event register latches in the form, once
the data is stored, subsequent data will be completely ignored. Even
cannot be 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
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