Status Information
Chapter Seven: IEEE-488 Communications Option
106
Standard Event Status Register
This register contains status information on the last communication (command) sent to the
controller. The 670 instrument updates this register each time it receives a command.
Table 28 describes the function of this register.
Standard Event Status Register
Bit Number
Function
7
Power On Always set (value of 1) when the 670 unit is powered on
6
Not Used*
5
Unrecognized Command
4
Inappropriate Command
3
Data Invalid
2
Set when query received and previous query not read
1
Not Used*
0
Not Used*
* Will read as 0
Table 28: Standard Event Status Register
Standard Event Status Register Query (*ESR?)
Use this command to query the Standard Event Status register. If there is an error, this register
may indicate what type of error has occurred.
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