Status and Events
3026 Programmer Manual
Figure 3-5 shows an outline of the sequence for status and event processing.
Standard Event Status Register
(SESR)
Read using *ESR?
Cannot be written
Event Status Enable Register
(ESER)
Read using *ESE?
Write using *ESE
Status Byte Register
(SBR)
Read using *STB?
Cannot be written
Service Request Enable Register
(SRER)
Read using *SRE?
Write using *SRE
Event
queue
Output
queue
Event
Event
Event
Byte
Byte
Byte
1
2
3
5
6
4
PON
CME EXE DDE QYE
OPC
7
6
5
4
3
2
1
0
PON
CME EXE DDE QYE
OPC
7
6
5
4
3
2
1
0
RQS
ESB MAV
Ċ
Ċ
Ċ
MSS
7
6
5
4
3
2
1
0
6
Ċ
ESB MAV
Ċ
Ċ
Ċ
7
6
5
4
3
2
1
0
OSB
QSB
Ċ
Ċ
OSB
QSB
Ċ
Ċ
1. If an event has occurred, the SESR bit corresponding to that event is set and
the event is placed in the event queue.
2. A bit corresponding to that event in the ESER has is set.
3. The SBR ESB bit is set to reflect the status of the ESER.
4. When a message is sent to the output queue, the SBR MAV bit is set.
5. Setting either the ESB or MAV bits in the SBR sets the respective bit in the
SRER.
6. When the SRER bit is set, the SBR MSS bit is set and a service request is
generated when using the GPIB interface.
Summary of Contents for 3026
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Page 8: ...Preface 3026 Programmer Manual ...
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Page 112: ...Appendix B Reserved Words 3026 Programmer Manual ...
Page 116: ...Appendix C Interface Specification 3026 Programmer Manual ...
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