Lakeshore 340 User Manual page 137

PGMRUN?
Query Program Status.
Input: PGMRUN?
Returned: <program>,<status>. Format: nn,n[term]
Remarks: Returns the current program running and the status. If <program> = 0,
no program is running. Values for <status> include:
0 - No errors
1 - Too many Call commands
2 - Too many Repeat commands
PID
Configure Control Loop PID Values
Input: PID <loop>, [<P value>], [<I value>], [<D value>]
Returned: Nothing
Remarks: Configures control loop PID values.
<loop>
<P value> The value for P.
<I value>
<D value> The value for D.
Example: PID 1, 10, 50[term] - Control Loop 1 P is 10 and I is 50.
PID?
Query Control Loop PID Values
Input: PID? <loop>
Returned: <P value>, <I value>, <D value>. Format: nnnn.n,nnnn.n,nnnn[term]
Remarks: Returns control loop PID values. See the PID command for parameter descriptions. <loop>
specifies which loop to query.
RAMP
Configure Control Loop Ramp Parameters
Input: RAMP <loop>, [<off/on>], [<rate value>]
Returned: Nothing
Remarks: Configures the control loop ramp.
<loop>
<off/on>
<rate value> Specifies how many kelvin per minute to ramp the setpoint.
Example: RAMP 1, 1, 10.5[term] - When Control Loop 1 setpoint is changed, ramp the current setpoint
to the target setpoint at 10.5 K/minute.
RAMP?
Query Control Loop Ramp Parameters
Input: RAMP? <loop>
Returned: <off/on>, <rate value>. Format: nnn.n[term]
Remarks: Returns the control loop ramp parameters. See the RAMP command for parameter
descriptions. <loop> specifies which loop to query.
RAMPST?
Query Control Loop Ramp Status
Input: RAMPST? <loop>
Returned: <ramp status>. Format: n[term]
Remarks: Returns 0 if setpoint is not ramping, and 1 if it is ramping. <loop> specifies loop to query.
RANGE
Configure Heater Range
Input: RANGE <range>
Returned: Nothing
Remarks: Configure the heater range. <range> specifies the heater range (Paragraph 6.12.1).
Valid entries: 0 - 5.
Example: RANGE 0[term] - Turns off the heater.
Remote Operation
Lake Shore Model 340 Temperature Controller User's Manual
Specifies loop to configure.
The value for I.
Specifies which loop to configure.
Specifies whether ramping is off or on.
3 - Too many End Repeat commands
4 - The control channel setpoint is not in temperature
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