Figure 5.2 Standard Event Register Model - Pacific UPC-32 Operation Manual

SECTION 5 REMOTE OPERATION
5.5.3.1 IEEE-488.2 STATUS REPORTING (cont)
STANDARD EVENT STATUS REGISTER (ESR)
Events reported by the STANDARD EVENT STATUS register may be queried via the *ESR? command.
Reading the ESR register clears it. The EVENT STATUS summary bit in the STATUS BYTE (STB) will
be set when an unmasked EVENT STATUS bit goes true. Refer to figure 5.2.
BIT NAME
7 PON
6 URQ
5 CME
4 EXE
3 DDE
2 QYE
1 RQC
0 OPC
Setting an EVENT STATUS ENABLE (ESE) bit true unmasks the EVENT bit in the ESR. Also see
:SYSTem:ERRor? query for corresponding information.
PON
7
&
L
O
G
I
C
A
L
O
R
PON
7
SUMMARY
MESSAGE
EVENT
SUMMARY
BIT
(BIT 5 OF
STATUS
BYTE
REGISTER)
DEFINITION
POWER ON indicates Input power was just applied
USER REQUEST indicates "LOCAL" key was just pressed
COMMAND ERROR indicates invalid command or query received
EXECUTION ERROR indicates can't execute command with data received
DEVICE DEPENDANT ERROR indicates UPC not properly configured
QUERY ERROR indicates cannot respond with data
REQUEST CONTROL - not used
OPERATION COMPLETE indicates previous operation complete
URQ
CME EXE
5
6 4
&
&
&
URQ CME EXE
6 5 4
FIGURE 5.2 STANDARD EVENT REGISTER MODEL
QYE RQC
DDE
3 2 1
&
&
&
DDE QYE RQC
3 2 1
92
STANDARD
OPC
EVENT STATUS
0
REGISTER
*ESR?
&
STANDARD
EVENT STATUS
OPC
ENABLE
0
REGISTER
*ESE <NRf>
*ESE?