Programming Guide

Digital Oscilloscopes Series
50
STATUS
*ESR?
Command /Query
DESCRIPTION
The *ESR? query reads and clears the contents of
the Event Status Register (ESR). The response
represents the sum of the binary values of the
register bits 0 to 7.
QUERY SYNTAX
*ESR?
RESPONSE FORMAT
*ESER<value>
<value> : = 0 to 255
EXAMPLE
The following instruction reads and clears the
contents of the ESR register:
Command message:
*ESR?
Response message:
*ESR 0
RELATED COMMANDS
ALL_STATUS, *CLS, *ESE
ADDITIONAL INFORMATION
Standard Event Status Register (ESR)
Bit
Bit Value
Bit Name
Description
Note
15~
8
0
reserved by IEEE 488.2
7
128
PON
1
Power off-to-ON transition as
occurred
(1)
6
64
URQ
1
User Request has been issued
(2)
5
32
CME
1
Command parser Error has been
detected
(3)
4
16
EXE
1
Execution Error detected
(4)
3
8
DDE
1
Device specific Error occurred
(5)
2
4
QYE
1
Query Error occurred
(6)
1
2
RQC
1
Instrument never requests bus control
(7)
0
1
OPC
1
Instrument never requests bus control
(8)