Lake Shore Model 642 Electromagnet Power Supply User’s Manual
Computer Interface Operation
5-33
ERSTR?
Error Status Register Query
Input: ERSTR?
[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. These error bits are
latched when an error condition is detected. This register is cleared when it is read. 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.
IEEE
IEEE-488 Interface Parameter Command
Input:
IEEE <terminator>, <EOI enable>, <address>[term]
Format:
n,n,nn
<terminator>
Specifies the terminator. Valid entries: 0 = <CR><LF>,1 = <LF><CR>,
2 = <LF>, 3 = No terminator (must have EOI enabled).
<EOI enable>
Sets EOI mode: 0 = Enabled, 1 = Disabled.
<address>
Specifies the IEEE address: 1
–
30. (Address 0 and 31 are reserved.)
Example: IEEE
0,0,4[term]
– After receipt of the current terminator, the instrument uses <CR><LF> as the
new terminator, uses EOI mode, and responds to address 4.
IEEE?
IEEE-488
Interface Parameter Query
Input: IEEE?[term]
Returned:
<terminator>, <EOI enable>, <address>[term]
Format:
n,n,nn
(Refer to command for description)
<mode>
0 = Manual Off, 1 = Manual On, 2 = Auto, 3 = Disabled
INTWTR
Internal Water Mode Command
Input:
INTWTR <mode> [term]
Format:
n
<mode>
0 = Manual Off, 1 = Manual On, 2 = Auto, 3 = Disabled
Example: INTWTR 2[term]
–
Places the internal water mode to Auto, which will automatically control the
power supply water valve based on the internal power dissipation and temperature.
INTWTR?
Internal Water Mode Query
Input:
INTWTR? [term]
Returned:
<mode>[term]
Format:
n
(Refer to command for description)
KEYST?
Keypad
Status
Query
Input:
KEYST?[term]
Returned:
<code>[term]
Format:
nn
Remarks:
Returns a number descriptor of the last key pressed since the last KEYST?.
Returns “01” after initial power-up. Returns “00” if no key pressed since last query.
