Lakeshore Learning Materials 642 - Manual (Page 58)

Lake Shore Model 642 Electromagnet Power Supply User’s Manual
5-6 Computer Interface Operation
Name
Name
Name
Used
Not
Used
Not
7 6 5 4 3 2 1 0 Bit
Used Used ERST?
Not
Used
7
Not
Used
6 5
Condition Register
Error Status
7
Not
6 5
Not
4 3 2 1 0 Bit
4 3 2 1 0 Bit
DAC OCF OOV OOC TF
TF
TF
AND
AND
AND
AND
AND
Event Register
Error Status
ERSTR?
Enable Register
Error Status
ERSTE, ERSTE?
A Sheet
1 of 2
To
AND
ERSTE, ERSTE?
Enable Register
Error Status
AND
7 6 5 4 3
AND
AND
AND
2 1 0 Bit
Name
AND
Event Register
ERST?
Error Status
Condition Register
Error Status
ERSTR?
LLV
6 7 5 3 4
7 6
HLV MFF
5 4 3
2 0 1
Name
Bit
EPE TH CAL
2 1 0
Name
Bit
Sheet B
1 of 2
To
PFF REF
PFF REF HLV MFF LLV EPE TH CAL
PFF REF HLV MFF LLV EPE TH CAL
AND
AND
OR
Hardware Errors
TF = Temperature Fault
DAC = DAC Processor Not Responding
OCF = Output Control Failure
OOV = Output Over Voltage
OOC = Output Over Current
LLV = Low Line Voltage
Operational Errors
EPE = External Current Program Error
TH = Temperature High
HLV = High Line Voltage
MFF = Magnet Flow Switch Fault
PFF = Power Supply Flow Switch Fault
REF = Remote Enable Fault
CAL = Calibration Error
Used
Not
Used
Not
Used
Not
OR
DAC OCF OOV OOC
DAC OCF OOV OOC
Figure 5-1. Model 642 Status System (Sheet 2 of 2)