Status Byte Register; Model 642 Status System - Lakeshore 642 User Manual

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