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1
Introduction to SCPI
SCPI Status System
Standard Event register
The Standard Event register group reports the following types of instrument
events: power-on detected, command syntax errors, command execution
errors, device errors (self-test or calibration), or query errors. All of these
conditions can be reported in the Standard Event summary bit through the
enable register. To set the enable register mask, key in a decimal value to the
register using the event status enable (*ESE) command.
Bit definitions: Standard Event register
Bit number
0 Operation complete
1 Not used
2 Query error
3 Device error
4 Execution error
5 Command error
6 Not used
7 Power-on
The event register in the Standard Event is cleared when:
• you execute the clear status (*CLS) command, or
• you read the event register using the event status register (*ESR?)
The Standard Event enable register is cleared when you send the
*ESE 0 command.
N O T E
14
Decimal value
Definition
1
All commands prior to and including *OPC have been executed.
Not used
"0" is returned.
4
A query error occurred (an error in the –400 range has been generated).
8
A self-test, calibration, or other device-specific error has occurred (an
error in the -300 range or any positive error has been generated).
16
An execution error occurred.
32
A command syntax error occurred.
Not used
"0" is returned.
128
Power has been turned off and on since the last time the event register
was read or cleared.
command.
When a command, execution, device, or query error have occurred, a
related error message will be generated. For a complete listing of all error
messages, refer to
353.
Chapter
17, "List of Error Messages," starting on page
U3606B Programmer's Reference
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