Keysight U2741A, Руководство программиста

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12 SCPI Error Messages
156 Keysight U2741A Programmer’s Reference Guide
SCPI Error Messages
Error messages are created once a command error or and erroneous condition has
been detected.
– Errors are retrieved in first-in-first-out (FIFO) order using the
SYSTem:ERRor?
command. The first error returned is the first error that was stored. Errors are
cleared as you retrieve them.
– If more than 20 errors have occured, the last error stored in the queue (the
most recent error) is replaced with –350, “Queue overflow” . No additional
errors are stored until you remove errors from the queue. If no errors have
occurred when you read the error queue, the U2741A responds with +0,
“No error” .
– The error queue is also cleared by the clear status (
*CLS
) command or when
the power is cycled. The error queue is not cleared by an instrument reset
(
*RST
) command.
Command Errors
The following table shows the list of command errors.
Table 12-1 Command Errors (these errors set Standard Event Status register bit #5)
Error number Command errors
–100 Command error
Generic syntax error
–101 Invalid character
An invalid character was found in the command string. You may have inserted a character such as #, $, or % in a
command keyword or within a parameter.
–102 Syntax error
Invalid syntax was found in the command string. You may have inserted a blank space before or after a colon in
the command header, or before a comma.
–103 Invalid separator
An invalid separator was found in the command string. Check for proper usage of , ; :
–104 Data type error
The wrong parameter type was found in the command string. You may have specified a number where a string
was expected, or vice versa.