Lake Shore Model 340 Temperature Controller User’s Manual
8-12
Instrument Programming
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Cool
Down
ke
lv
in
minutes
Programmed
Actual
Program
Instructions
340-8-3.CVS
Figure 8-3. Sample Program #1
8.3.7 Example
of
Using
Subprograms (Example 2)
This is an example of a short subprogram that could easily be called from the program in example 1. It opens
then closes the high relay before returning to the calling program. The subprogram should be stored in
program location 2. To use this subprogram, insert a Call instruction with Program parameter set to 2 in the
first example program. Run the first example again and listen for the relays to click at the appropriate time.
Edit Program #02
1 Relays >|High: ON
| Low: OFF
2 Wait >| Hours: 0
| Minutes: 0
| Seconds: 30
3 Relays >|High: OFF
| Low: OFF
4 End >|
8.3.8 Run an Internal Program
To run a program already entered into memory, press the
Program
key. Use the
Next Setting
key to
highlight
Run program
. Press the
Enter
key. Use the
s
or
t
key, or the numerical keypad, to enter the
program number. Press the
Enter
key. The display returns to normal and the program begins to execute. If
you wish to monitor where the program is, press the
Program
key. The
Status
line displays
Running
and the
Line
number the program is currently at is displayed. You should monitor the controller closely the first time
you run a new program to ensure it performs as expected.
8.3.9 Stop a Running Program
To stop a program already running, press the
Program
key. Use the
Next Setting
key to highlight
Terminate
program
. Press the
Enter
key. The program stops immediately. To verify the program has terminated, press
the
Program
key. The
Status
line displays
Stopped
and the
Line
number the program is currently on is zero.