Lake Shore Model 642 Electromagnet Power Supply User’s Manual
5-32
Computer Interface Operation
DFLT
Factory
Defaults
Command
Input: DFLT
99[term]
Remarks:
Sets all configuration values to factory defaults and resets the instrument. The instrument must be at
zero amps for this command to work. The "99" is included to prevent accidentally setting the unit to
defaults.
DISP
Display Parameter Command
Input:
DISP <brightness> [term]
Format:
n
<brightness> Specifies display brightness: 0 = 25%, 1 = 50%, 2 = 75%, 3 = 100%.
DISP?
Display Parameter Query
Input: DISP?
[term]
Returned:
<brightness>
[term]
Format:
n
(Refer to command for definition).
ERCL
Error Clear Command
Input: ERCL
[term]
Remarks:
This command will clear the operational errors. The errors will only be cleared if the error conditions
have been removed. Hardware errors can never be cleared. Refer to Paragraph 5.1.4.3 for a list of error
bits.
ERST?
Error Status Query
Input: ERST?
[term]
Returned:
<hardware errors>, <operational errors> [term]
Format:
nnn,nnn
Remarks:
The integers returned represent the sum of the bit weighting of the error bits. Refer to
Paragraph 5.1.4.3 for a list of error bits. Use the
ERRCL
command to clear the operational errors.
Hardware errors cannot be cleared.
ERSTE
Error Status Enable Command
Input:
ERSTE <hardware errors>, <operational errors> [term]
Format:
nnn,nnn
Remarks:
Each bit has a bit weighting and represents the enable/disable mask of the corresponding error bits in
the Error Status Register. This determines which status bits can set the corresponding summary bits in
the Status Byte Register. To enable an error bit, send the command
ERSTE
with the sum of the bit
weighting for each desired bit. Refer to Paragraph 5.1.4.3 for a list of error bits.
ERSTE?
Error Status Enable Query
Input: ERSTE?[term]
Returned:
<hardware errors>, <operational errors> [term]
Format:
nnn,nnn
Refer to Paragraph 5.1.4.3 for a list of error bits.
