Chapter 5 Command Reference
Description of SCPI Commands
Operating and Programming Manual 95
System Commands
The SYSTem commands control functions related to remote system
communication, configuration, and any error messages.
Any commands which alter the state of the instrument will return error +201 if
the instrument is not in REMOTE mode when the command is issued.
SYSTem:ERRor?
This query returns error numbers and corresponding error messages in the error
queue.
• Refer to the error message listing at the end of this chapter for details of error
codes, messages and meanings.
• Response format = <NR1>.
• When an error occurs within the instrument, its corresponding number and
message are generated and stored in the error queue.
• One error is removed from the error queue each time the SYSTem:ERRor?
command is executed. The errors are cleared in a first-in, first-out order.
This means that if several errors are waiting in the queue, each
SYSTem:ERRor? query returns the oldest (not the most recent) error. That
error is then removed from the queue.
• When the error queue is empty, subsequent SYSTem:ERRor? queries return
+0, ―No error‖. To clear all errors from the queue, execute the *CLS
command.
• The error queue has a maximum capacity of 30 errors. If the queue
overflows, the last error is replaced with -350, ―Too many errors‖. No
further errors are accepted until space is available.
• The error queue is empty at power-on.
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