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IEEE 488.2 Register Model
6.6 The Standard Event Register
The Standard Event Register reports different types of events that may occur in
the instrument. Any or all of these conditions can be reported to the Standard
Event summary bit through the enable register. To set the enable register
mask, you must write a decimal value to the register using the *ESE command.
Table 6-2 Bit definitions – Standard Event Register
Bit Number Decimal Value Definitions
0 Operation Complete 1 All commands prior to and
including *OPC have been
executed.
1 2 Free for manufacturer to
assign
2 Query Error 4 The instrument tried to read
the output buffer but it was
empty. Or a new command
line was received before a
previous query has been
read. Or both the input and
output buffers are full.
3 Device Error 8 A self-test or calibration
error occurred.
4 Execution Error 16 An execution error occurred.
5 Command Error 32 A command syntax error
occurred.
6 64 Free for manufacturer to
assign
7 128 Free for manufacturer to
assign
The Standard event register is cleared when:
• The *CLS command is executed.
• A query of the event register using the *ESR? Command.
The Standard Event enable register is cleared when:
• The *ESE 0 command is executed.
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