Status and Events

Programming

3 --- 4 0

DeviceEvent Status Enable Register
(DESER)
StandardEvent Status Register
(SESR)
EventStatus Enable Register
(ESER)
StatusByte Register
(SBR)
ServiceRequest Enable Register
(SRER)
Event
Queue
Output
Queue
Event
Event
Event
Byte
Byte
Byte
1
2
3
4
6
7
5
PON URQ CME EXE DDE QYE RQC OPC
76543210
PON URQ CME EXE DDE QYE RQC OPC
76543210
PON URQ CME EXE DDE QYE RQC OPC
76543210
RQS
ESB MAV ————
MSS
7
6
543210
6
——ESB MAV ————
76543210

Figure 3-11: Status and Event Handling Process

Whenever a command is issued that resultsin a conflict, an event is gener-

ated on the EXE bit (bit4).

Youcan avoid generating this event if you concatenate commands so that

the conflict isresolved when the command is completed. For example, when

setting the attenuator in DBR mode, always make sure that the REF com-

mand precedes the ATT:DBRcommand or an execution warning may result.

Conflicts