User`s guide

21-4
IEEE 488.2 Common Commands
*ESR? (Event Status Register)
*ESR? (Event Status Register)
Description The *ESR? query returns the contents of the Standard Event Status
Register.
NOTE Reading the Standard Event Status Register clears the contents of the register.
Query Syntax: *ESR?
Returned Format
<status><NL>
Where <status> = 0 to 255
Example
OUTPUT 714;”*ESR?”
ENTER 714;Event
PRINT Event
When you read the Event Status Register, the value returned is the
total bit weights of all bits that are true at the time you read the byte.