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Chapter 4 Remote Interface Reference
The SCPI Status Registers
The Standard Event Register
T h e S t a n d a r d E v e n t r e g i s t e r r e p o r t s t h e f o l l o w i n g t y p e s o f i n s t r u m e n t e v e n t s :
p o w e r - o n d e t e c t e d , c o m m a n d s y n t a x e r r o r s , c o m m a n d e x e c u t i o n e r r o r s , s e l f -
t e s t o r c a l i b r a t i o n e r r o r s , q u e r y e r r o r s , o r w h e n a n
A n y o r a l l o f t h e s e c o n d i t i o n s c a n b e r e p o r t e d i n t h e s t a n d a r d e v e n t s u m m a r y
b i t ( E S B , b i t 5 ) o f S t a t u s B y t e r e g i s t e r t h r o u g h t h e e n a b l e r e g i s t e r . T o s e t t h e
e n a b l e r e g i s t e r m a s k , y o u w r i t e a d e c i m a l v a l u e t o t h e r e g i s t e r u s i n g t h e
( E v e n t S t a t u s E n a b l e ) c o m m a n d .
A n e r r o r c o n d i t i o n ( S t a n d a r d E v e n t r e g i s t e r b i t 2 , 3 , 4 , o r 5 ) w i l l a l w a y s
r e c o r d o n e o r m o r e e r r o r s i n t h e p o w e r s u p p l y ' s e r r o r q u e u e . R e a d t h e
e r r o r q u e u e u s i n g t h e
Table 4-4. Bit Definitions – Standard Event Register
Bit
Decimal
Value
0
OPC
1
Not Used
2
QYE
3
DDE
4
EXE
5
CME
6
Not Used
7
PON
*OPC
SYST:ERR?
c o m m a n d .
Definition
Operation Complete. All commands prior to and
1
*OPC
including an
command have been executed.
0
Always set to 0.
Query Error. The power supply tried to read the output
buffer but it was empty. Or, new command line was
4
received before a previous query had been read. Or, both
the input and output buffers are full.
Device Error. A self-test or calibration error occurred
8
(see error numbers 601 through 750 in chapter 5).
Execution Error. An execution error occurred (see error
16
numbers -211 through -224 in chapter 5).
Command Error. A command syntax error occurred (see
32
error numbers -101 through -178 in chapter 5).
0
Always set to 0.
Power On. Power has been turned off and on since the
128
last time the event register was read or cleared.
c o m m a n d i s e x e c u t e d .
*ESE
103
4
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