Lake Shore Model 331 Temperature Controller User’s Manual
HTR? Heater Output Query
Input: HTR?[term]
Returned:
<heater value>[term]
Format: +nnn.n
<heater value> Loop 1 heater output in percent (%). Use AOUT? for Loop 2.
HTRST? Heater Status Query
Input: HTRST?[term]
Returned:
<error code>[term]
Format: n
<error code> Heater error code: 0 = no error, 1 = heater open load, 2 = heater short.
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 EOI mode,
uses <CR><LF> as the new terminator, 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)
INCRV Input Curve Number Command
Input: INCRV <input>, <curve number>[term]
Format:
a,nn
<input> Specifies which input to configure: A or B.
<curve number> Specifies which curve the input uses. If specified curve parameters do
not match the input, the curve number defaults to 0. Valid entries:
0 = none, 1
– 20 = standard curves, 21 – 41 = user curves.
Remarks: Specifies the curve an input uses for temperature conversion.
Example: INCRV A,23[term] – Input A uses User Curve 23 for temperature conversion.
INCRV? Input Curve Number Query
Input: INCRV? <input>[term]
Format:
a
<input> Specifies which input to query: A or B.
Returned: <curve number>[term]
Format: nn (Refer to command for description)
6-32 Remote Operation