Reads the oldest error information or event information from the error queue.
The error/event queue can hold up to 16 errors. →Tutorial
Returns the oldest error or event from the error/event queue in the following format, in response to the SYST:ERR? query.
Example: If there is no error or event
This command returns +0,"No error".
Example: If a command has been received that cannot be executed in the present operating state of the PLZ-5W,
this command returns -221, "Settings conflict".
For details on errors, see the Command error reference.