Chapter 4 Remote Interface Reference
Status Reporting Commands
98
Status Reporting Commands
See diagram ‘‘SCPI Status System’’, on page 91 in this chapter for detailed
information of the status register structure of the power supply.
SYSTem:ERRor?
This query command reads one error from the error queue. When the front-panel
ERROR annunciator turns on, one or more command syntax or hardware errors have
been detected. A record of up to 20 errors can be stored in the power supply’s error
queue. See ‘‘Error Messages’’ for a complete listing of the errors in chapter 5.
• The first error returned is the first error that was stored. When you have read all
errors from the queue, the
ERROR annunciator turns off. The power supply beeps
once each time an error is generated.
• If more than 20 errors have occurred, the last error stored in the queue (the most
recent error) is replaced with -350, ‘‘Too many errors’’. No additional errors are
stored until you remove errors from the queue. If no errors have occurred when
you read the error queue, the power supply responds with +0, ‘‘No error’’.
• The error queue is cleared when power has been off or after a *CLS (clear status)
command has been executed. The *RST (reset) command does not clear the error
queue.
• All errors are cleared when you exit the menu or let the display time out for about
30 seconds.
STATus:QUEStionable:CONDition?
This command queries the Questionable Status condition register to check CV or CC
mode of the power supply. The power supply returns a decimal value which
corresponds to the binary-weighted sum of all bits in the register. These bits are not
latched. If ‘‘0’’ is returned, the power supply is in output off or unregulated state. If
‘‘1’’ is returned, the power supply is in the CC operating mode and if ‘‘2’’ is returned,
the power supply is in the CV operating mode. If ‘‘3’’ is returned, the power supply
is in failure.
STATus:QUEStionable?
This command queries the Questionable Status event register. The power supply
returns a decimal value which corresponds to the binary-weighted sum of all bits in
the register. These bits are latched. Reading the event register clears it.
STATus:QUEStionable:ENABle <enable value>
This command enables bits in the Questionable Status enable register. The selected
bits are then reported to the Status Byte.
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