User manual

WaveAce Remote Control
54
920836 Rev A
STATUS - *ESR?
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. The following table provides
an overview of the ESR register structure.
Query Syntax
*ESR?
Response Format
*ESR <value>
<value>:= 0 to 255
Response message:
*ESR 0
Related Commands
ALL_STATUS, *CLS, *ESE
ESR? Status Register Structure
Bit
Value
Name
Description
Note
15...8
0 - Reserved by IEEE
488.2.
7
128
PON
1 - Power OFF-to-ON
transition has occurred.
The Power On (PON) bit is always turned on (1) when
the unit is powered up.
6
64
URQ
1 - Not used.
On older Teledyne LeCroy oscilloscopes, this bit reports
soft key inputs. It does not apply to WaveAce
oscilloscopes.
5
32
CME
1 - CoMmand parser Error
has been detected.
The CoMmand parser Error bit (CME) is set true (1)
whenever a command syntax error is detected. The
CME bit has an associated CoMmand parser Register
(CMR) which specifies the error code. Refer to the
query CMR? for further details.
4
16
EXE
1 - EXecution Error
detected.
The EXecution Error bit (EXE) is set true (1) when a
command cannot be executed due to some device
condition (for example, the oscilloscope in local state)
or a semantic error. The EXE bit has an associated
Execution Error Register (EXR) that specifies the error
code. Refer to query EXR? for further details.