Lakeshore 331S User Manual page 130

LINEAR
Input Linear Equation Parameter Command
Input:
LINEAR <input>, <equation>, <varM value>, <X source>, <B source>,
<varB value>[term]
a,n,±nnnnnn,n,n,±nnnnnn
Format:
<input>
<equation>
<varM value> Specifies a value for m in the equation.
<X source >
<B source >
<varB value> Specifies a value for b in the equation if <B source> is 1.
Example: LINEAR A,1,1.0,1,3[term] – The linear data for Input A is calculated from the kelvin reading
of the input using the equation: y = 1.0 * x – SP1.
LINEAR?
Input Linear Equation Parameter Query
Input:
LINEAR? <input>[term]
Format: a
<input>
Returned: <equation>, <varM value>, <X source>, <B source>, <varB value>[term]
Format: n,±nnnnnn,n,n,±nnnnnn
Remarks: Returns input linear equation configuration.
LOCK
Front Panel Keyboard Lock Command
Input:
LOCK <state>, <code>[term]
n,nnn
Format:
<state>
<code>
Remarks: Locks out all front panel entries except pressing the Alarm key to silence alarms and Heater
Off to immediately turn off the heater output. Refer to Paragraph 4.17. Use the CODE
command to set the lock code.
Example: LOCK 1,123[term] – Enables keypad lock and sets the code to 123.
LOCK?
Front Panel Keyboard Lock Query
Input:
LOCK?[term]
Returned: <state>, <code>[term]
n,nnn
Format:
MDAT?
Minimum/Maximum Data Query
Input:
MDAT? <input>[term]
Format: a
<input>
Returned: <min value>,<max value>[term]
Format: ±nnnnnn,±nnnnnn
Remarks: Returns the minimum and maximum input data. Also see the RDGST? command.
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Lake Shore Model 331 Temperature Controller User's Manual
Specifies input to configure: A or B.
Specifies linear equation to use.
Valid entries: 1 = (y = mx + b), 2 = (y = m(x + b)).
Specifies input data to use. Valid entries: 1 = kelvin, 2 = Celsius,
3 = sensor units.
Specifies what to use for b in the equation. To use a setpoint, set its units to
the same type specified in <X source>. Valid entries: 1 = a value, 2 = +SP1,
3 = -SP1, 4 = +SP2, 5 = -SP2.
Specifies which input to query: A or B.
(Refer to command for description)
0 = Unlocked, 1 = Locked
Specifies lock-out code. Valid entries are 000 – 999.
(Refer to command for description)
Specifies which input to query: A or B.
Remote Operation