Esr - Keysight U2722A Programmer's Reference Manual

13 IEEE-488.2 Common Commands

*ESR?

Syntax
*ESR?
This query returns the value of the event register of the Standard Event Status
group. Once it is read, it will be cleared automatically. The event register is a
read-only register, which stores (latches) all standard events.
Remarks
– The following table lists the bit definitions for the Standard Event register.
Bit number
0 Operation Complete
1 Not Used
2 Query Error
3 Device-Dependent Error
4 Execution Error
5 Command Error
6 Not Used
7 Power On
– To be reported to the Standard Event register, the corresponding bits in the
– Once a bit is set, it will remain set until cleared by reading the event register or
116
Decimal value Definition
1 All commands prior to and including *OPC have been executed.
2 Always zero.
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.
8 A self-test or calibration error occurred. For a complete listing of the error
messages, refer to
16 An execution error occurred (an error in the –200 range has been generated.
32 A command syntax error occurred (an error in the –100 range has been
generated).
64 Always zero.
128 Power has been turned off and on since the last time the event register was
read or cleared.
event register must be enabled using the
the clear status (*CLS) command.
Chapter 14, "Error Messages"
*ESE/*ESE?
Keysight U2722A/U2723A Programmer's Reference
on page 130.
command.