2 – 8
Remote Operation
2.6
Command List
2.6.1
Common IEEE-488.2 Commands
Clear Status
*CLS
*CLS
Clear Status immediately clears the ESR register as well as the
LERR error bu
ff
er.
*CLS
Example:
Standard Event Status Enable
*ESE(?)
{
i
}
Set (query) the Standard Event Status Enable register
{
to
i
}
. Bits set
in this register cause ESB (in STB) to be set when the corresponding
bit is set in the ESR register.
Standard Event Status Register
*ESR?
Query the Standard Event Status Register. Upon executing a
*ESR?
query, the returned bits of the *ESR register are cleared. The bits in
the ESR register have the following meaning:
Bit
Meaning
0
OPC operation complete
1
Reserved
2
QYE query error
3
DDE device dependent error
4
EXE execution error
5
CME command error
6
Reserved
7
PON power-on
*ESR?
CR
Example:
176
The returned value of 176 (
=
2
7
+
2
5
+
2
4
) indicates that PON, CME,
and EXE are set.
SR474 Four Channel Shutter Driver
