Model 2701 User’s Manual Status Structure 11-3
Figure 11-1
Model 2701 status register structure
(Always Zero)
Logical
OR
(Always Zero)
Idle State
Status
Byte
Register
Logical
OR
*STB?
*SRE / *SRE?
Master Summary Status (MSS)
MSB = Measurement Summary Bit
EAV = Error Available
QSB = Questionable Summary Bit
MAV = Message Available
ESB = Event Summary Bit
MSS = Master Summary Status
OSB = Operation Summary Bit
Error Queue
(Always Zero)
Operation Complete
Query Error
Device-Dependent Error
Execution Error
Command Error
User Request
Power On
(Always Zero)
Reading Overflow
Low Limit 1 Event
High Limit 1 Event
Reading Available
Buffer Available
Buffer Half Full
Buffer Full
Calibration Summary
Command Warning
Temperature Summary
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
Low Limit 2 Event
High Limit 2 Event
Hardware Limit Event
Buffer Overflow
Buffer Quarter Full
Buffer Three-Quarter Full
Master Limit
Filter Settled
Measuring
Waiting for
Trigger
&
&
&
&
&
&
&
Buffer Notify
Questionable
Event Enable
Register
Questionable
Condition
Register
Questionable
Event
Register
0
2
3
5
6
Cal
7
9
10
11
12
13
15
1
Temp
Warn
0
2
3
5
6
Cal
7
9
10
11
12
13
15
1
Temp
Warn
0
2
3
5
6
Cal
7
9
10
11
12
13
15
1
Temp
Warn
Output Queue
Service
Request
Enable
Register
EAV
QSB
MAV
ESB
MSS
OSB
1
MSB
EAV
QSB
MAV
ESB
6
OSB
1
MSB
Standard
Event
Status
Register
Standard
Event
Status
Enable
Register
Logical
OR
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
OPC
QYE
DDE
CME
URQ
8
PON
9
10
11
12
13
15
1
EXE
14
OPC
8
9
10
11
12
13
15
1
14
QYE
DDE
CME
URQ
PON
EXE
Logical
OR
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
Operation
Event Enable
Register
Operation
Condition
Register
Operation
Event
Register
0
2
3
Trig
6
Filt
7
9
Idle
11
12
13
15
1
Meas
14
0
2
3
Trig
6
Filt
7
9
Idle
11
12
13
15
1
Meas
14
0
2
3
Trig
6
Filt
7
9
Idle
11
12
13
15
1
Meas
14
Logical
OR
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
Measurement
Event Enable
Register
Measurement
Condition
Register
Measurement
Event
Register
ROF
HL1
LL2
RAV
BN
BHF
BAV
BF
BOF
HL
BQF
BTF
15
LL1
HL2
MS
ROF
HL1
LL2
RAV
BN
BHF
BAV
BF
BOF
HL
BQF
BTF
15
LL1
HL2
MS
ROF
HL1
LL2
RAV
BN
BHF
BAV
BF
BOF
HL
BQF
BTF
15
LL1
HL2
MS
Note:
RQS bit is in serial poll byte,
MSS bit is in *STB? response.