Figure 11-1 Model 2520 Status Register Structure - Keithley 2520 User Manual

Model 2520 User's Manual
Figure 11-1
Model 2520 status register structure
Calibration Summary
Command Warning
(Always Zero)
Operation Complete
Query Error
Device Specific Error
Execution Error
Command Error
User Request
Power On
(Always Zero)
Measurement Measurement
Condition
Register
0
HW Interlock
INT
MSR 1 Overflow
M1O
MSR 2 Overflow
M2O
MSR 3 Overflow
M3O
5
RAV
Reading Available
Sweep Aborted
SWA
Sweep Done
SWD
9
10
11
Over Temperature
12
13
Src 1 Compliance
S1C
(Always Zero) 15
Questionable
Questionable Questionable Event
Condition Event Enable
Register Register Register
&
0 0 0
1 1 & 1
2 2 2
&
3 3 3
&
4 &
4 4
5 5 5
&
6 6 6
&
7 7
7 &
& Cal
Cal Cal
9 9 & 9
10 10 10
&
11 &
11 11
12 12 & 12
13 13 & 13
Warn
Warn Warn
&
15 15 15
&
Output Queue
Standard
Event
Standard
Event Status
Status Enable
Register Register
OPC & OPC
1 & 1
QYE & QYE
DDE DDE
&
EXE & EXE
&
CME CME
&
URQ URQ
Logical
PON PON
&
OR
8 & 8
9 & 9
10 10
&
11 & 11
12 & 12
&
13 13
14 & 14
15 15
&
*ESR? *ESE
*ESE?
Measurement
Event
Event Enable
Register Register
0
& 0
INT INT
&
M1O M1O
&
M2O M2O
&
M3O M3O
&
5 & 5
RAV RAV
&
Logical
SWA & SWA
OR
& SWD
SWD
9
9
&
10 10
&
11 11
&
12 & 12
13 13
&
S1C S1C
&
15 15
&
Logical
OR
Error Queue
Status
Byte
Register
MSB
1
EAV
QSB
MAV
ESB
RQS/MSS
OSB
*STB?
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
Note: RQS bit is in serial poll byte,
MSS bit is in *STB? response.
Operation
Operation
Condition
Register Register
Calibrating
Cal
1
2
3
4
Waiting for Trigger Trig
6
7
8
9
Idle
Idle
11
12
13
14
(Always Zero)
15
Status Structure
Service
Request
Enable
Register
& MSB
1
&
EAV
&
QSB
& Logical
OR
MAV
&
ESB
&
6
OSB
&
*SRE
*SRE?
Operation
Event
Event Enable
Register
Cal & Cal
1 1
&
2 & 2
3
3
&
4 4
&
Trig Trig
&
6 6
&
Logical
7 & 7
OR
8 & 8
9 9
&
Idle Idle
&
&
11 11
12 & 12
13 13
&
14 14
&
15 15
&
11-3