Lakeshore 340 - Page 137

Lake Shore Model 340 Temperature Controller User’s Manual
Remote Operation 9-39
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 3 - Too many End Repeat commands
1 - Too many Call commands 4 - The control channel setpoint is not in temperature
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> Specifies loop to configure.
<P value> The value for P.
<I value> The value for I.
<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> Specifies which loop to configure.
<off/on> Specifies whether ramping is off or 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.