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Chapter 3 Front-Panel Operation
System-Related Operations
45
3
Error Conditions
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 chapter 5 “Error
Messages”, starting on page 113 for a complete listing of the errors.
• Errors are retrieved in first-in-first-out (FIFO) order. 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 when you operate the power supply
over the remote interface, 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 ” over the remote interface or “NO ERRORS” from the front panel.
• 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.
• Front-panel operation:
If the ERROR annunciator is on, press the key repeatedly to read
the errors stored in the queue. All errors are cleared when you read all
errors.
• Remote interface operation:
SYSTem:ERRor?
Reads one error from the error queue
Errors have the following format (the error string may contain up to 80
characters).
-113,"Undefined header"
ERROR -113
Error