Computer interface operation 5-5, Opste, Sre, *sre – Lakeshore Learning Materials 642 User Manual
Page 57: Opstr, Opst, Ese, *ese
Lake Shore Model 642 Electromagnet Power Supply User’s Manual
Computer Interface Operation
5-5
Service Request
Name
Bit
Not
RQS = Service Request
MSS = Master Summary Status Bit
ESB = Event Status Sumary Bit
MAV = Message Available Summary Bit
OSB = Operation Summary Bit
OESB = Operational Error Summary Bit
HESB = Hardware Error Summary Bit
Used
6
COMP = Compliance
RAMP = Ramp Done
OPSTE?
Register
Operation
Event Enable
OPSTE,
Used
Not
7
Used
Not
Used
Not
6
5
Used
Not
Not
Used
4
3
*SRE, *SRE?
Enable Register
Operation
OPSTR?
Condition
OPST?
Operation
Register
Register
Event
Used
7
Not
Used
Not
7
Used
Not
6
Used
5
Not
Not
Used
6
Not
Used
5
Used
4
Not
Used
Not
3
Not
Used
4
Not
Used
3
OSB
7
AND
Bit
Name
2
1
0
AND
Name
Bit
Name
Bit
Not
Used
2
1
2
1
0
0
ESB
5
MAV
4
3
2
Used
1
Not
0
Bit
Name
6
Standard Event
Status Byte
Generate service
request. Reset by
Read by *STB?
PON = Power on
CME = Command Error
EXE = Execution Error
QYE = Query Error
OPC = Operation Complete
RQS
MSS
serial poll.
*ESE, *ESE?
Status Enable
Register
*STB?
AND
OSB
7
RQS
AND
*ESR?
Standard Event
Status Register
PON
7
AND
AND
6
Not
Used
5
CME
4
EXE
3
Used
Not
Not
Used
AND
MSS ESB
5
AND
MAV
4
3
Buffer
Output
2
Used
1
Not
0
Name
Bit
AND
AND
Used
Not
QYE
2
1
0
OPC
2 of 2
Sheet
From
A
B
1
Used
Not
7
PON
6
Used
Not
Used
Not
EXE
5
CME
4
QYE
2
3
Name
OPC
0
Bit
OR
AND
OR
PRLM = Power Limit
OR
AND
AND
Figure 5-1. Model 642 Status System (Sheet 1 of 2)