Tektronix Keithley SourceMeter 2470, Reference Manual

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Appendix A: Common commands 2470 High Voltage SourceMeter Instrument Reference Manual
A-4 2470-901-01 Rev. A /
May
2019
*ESR?
This command reads and clears the contents of the Standard Event Status Register.
Type Affected by Where saved Default value
Query only Not applicable Not applicable Not applicable
Usage
*ESR?
Details
The instrument returns a decimal value that corresponds to the binary-weighted sum of all bits set in
the register.
Bit Decimal
value Constant When set, indicates the following has occurred:
0 1 status.standard.OPC All pending selected instrument operations are
complete and the instrument is ready to accept new
commands. The bit is set in response to an
*OPC
(on page A-6) command or TSP opc() (on page
14-98) function.
1 2 Not used Not used.
2 4
status.standard.QYE
Attempt to read data from an empty Output Queue.
3 8 Not used Not used.
4 16 Not used Not used.
5 32 Not used Not used.
6 64 Not used Not used.
7 128 status.standard.PON The instrument has been turned off and turned back
on since the last time this register was read.
Command errors include:
•
IEEE Std 488.2 syntax error: The instrument received a message that does not follow the
defined syntax of the IEEE Std 488.2 standard.
•
Semantic error: The instrument received a command that was misspelled or received an
optional IEEE Std 488.2 command that is not implemented in the instrument.
•
GET error: The instrument received a Group Execute Trigger (GET) inside a program message.
Example
*ESR? Example output:
128
Shows that the Standard Event Status Register contains binary
10000000
, which indicates that the instrument was rebooted
since the last time this register was read.
Also see
Status model (on page B-1)