Pacific Power Source UPC-32 - Example: Executing a Stored Program; Example: Executing a Stored Program Transient; Example: Changing Output Parameters

SECTION 5 REMOTE OPERATION
83
5.5.3.1 IEEE-488.2 STATUS REPORTING (continued)
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 (Figure 5.2, below).
BIT
NAME
DEFINITION
7
PON
POWER ON indicates Input power was just applied
6
URQ
USER REQUEST indicates "LOCAL" key was just pressed
5
CME
COMMAND ERROR indicates invalid command or query received
4
EXE
EXECUTION ERROR indicates can't execute command with data received
3
DDE
DEVICE DEPENDANT ERROR indicates UPC not properly configured
2
QYE
QUERY ERROR indicates cannot respond with data
1
RQC
REQUEST CONTROL - not used
0
OPC
OPERATION COMPLETE indicates previous operation complete
Setting an EVENT STATUS ENABLE (ESE) bit true unmasks the EVENT bit in the ESR. Also see
:SYSTem:ERRor? query for corresponding information (5.5.3.2).
3
DDE
3
DDE
&
PON
7
URQ
6
EXECME
5
4
&
&
PON
&
7
&
URQ
6
EXECME
5
4
*ESE <NRf>
&
QYE
2
&
RQC
1
&
*ESE?
OPC
0
QYE
2
RQC
1
OPC
0
*ESR?
FIGURE 5.2 STANDARD EVENT REGISTER MODEL
STANDARD
EVENT STATUS
REGISTER
STANDARD
EVENT STATUS
ENABLE
REGISTER
SUMMARY
MESSAGE
EVENT
SUMMARY
BIT
(BIT 5 OF
STATUS
BYTE
REGISTER)
L
O
G
I
C
A
L
O
R
POWER ON
USER REQUEST
COMMAND ERROR
EXECUTION ERROR
DEVICE DEPENDANT
ERROR
QUERY ERROE
REQUEST CONTROL
OPERATION COMPLETE