Keithley 2016 - Status Structure; Figure 4-5 Model 2016 Status Register Structure

Status structure
See Figure 4-5 for the Model 2016 THD Multimeters status structure. Instrument events, such
as errors, are monitored and manipulated by four status register sets. Notice that these status
register sets feed directly into the Status Byte Register. More detailed illustrations of these
register sets are provided by Figure 4-5 through Figure 4-9.
0
2
3
5
6
Cal
7
9
10
11
12
13
14
15
Questionable
Condition
Register
(Always Zero)
0
2
3
5
6
7
9
10
11
12
13
14
15
Questionable
Event
Register
0
11 1
2
3
5
6
7
9
10
11
12
13
14
15
Questionable
Event
Enable
Register
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
Logical
OR
Trig
7
8
Idle
11
12
13
15
Operation
Condition
Register
(Always Zero)
7
8
Idle
11
12
13
15
Operation
Event
Register
7
8
Idle
11
12
13
15
Operation
Event
Enable
Register
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
Logical
OR
Idle
EAV
QSB
MAV
ESB
RQS/MSS
OSB
Status
Byte
Register
1
EAV
QSB
MAV
ESB
6
OSB
Service
Request
Enable
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
RQS/MSS = Request for Service/Master Summary Staus
OSB = Operation Summary Bit
Error Queue
Output Queue
Trig Trig
Note : RQS bit is in serial poll byte,
MSS bit is in *STB? response.
1
14 14
OPC
QYE
DDE
EXE
CME
URQ
PON
8
9
8
11
12
13
15
Standard
Event
Status
Register
8
9
8
11
12
13
15
Standard
Event
Status
Enable
Register
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
Logical
OR
(Always Zero)
Operation Complete
Query Error
Device Specific Error
Execution Error
Command Error
User Request
Power On
OPC
QYE
DDE
EXE
CME
URQ
PON
*ESR? *ESE
*ESE?
MSB MSB
RUF
TFO
TFU
TSF
15
(Always Zero)
TFU
TSF
15
Measurement
Event
Register
TFU
TSF
15
Measurement
Event
Enable
Register
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
&
Logical
OR
Measurement
Condition
Register
ROF
LL1
HL1
LL2
HL2
RAV
BAV
BHF
BFL
ROF
LL1
HL1
RAV
BAV
BHF
BFL
ROF
LL1
HL1
RAV
BAV
BHF
BFL
Reading Overfolw
Low Limit 1
High Limit 1
Reading Available
Buffer Available
Buffer Half Full
Buffer Full
Reading Underflow
RUF RUF
11
Cal Cal
Calibration Summary
Command Warning
Warn Warn Warn
222
Temperature Summary
Temp Temp Temp
6
10
66
10 10
999
LL2
HL2
LL2
HL2
666
0
1
0
1
0
1
Meas Meas Meas
Low Limit 2
High Limit 2
Distortion Frequency Overflow
Shaping Filter Error
TFO TFO
Distortion Frequency Underflow
SWp Dn
SWD SWD
SWD
F
igure 4-5
M
odel 2016 status
register structure
4-16 Remote Operation