Manual
Almost Ready to Run
f?
Remember that Step
#1
was a “Wait Step.”
Even though you press the “RUN” key,
you won’t see
any action until the time you programmed into Step
#1.
You may want
to go
back and
adjust that time to a different value.
There
are various
ways to get back to Step
#1
in
CHG
DATA mode. Your display is now reading “08 NX
0009”; it is waiting for you to continue programming or monitoring.
Use the DOWN
key to put “0001” in the Data display and press ENTER. The display will show “01 WI”
(Step#l is a Wait Step). Now use the FCTN key to move through
“HR," “MN,”
and
“SC;” enter a time real time1 0 minutes from now.
Start Your Program!
The Wonderful Apple Pie Sample Program is all entered and ready. So press the
“RE-START’
key
(upper
front panel) to set the program to Step
#1.
Then press the
“RUN/HALT’ key to start the program.
Monitoring the Action
With the MNTR DATA LED lit, you can now use the FCTN key to check things out.
The control doesn’t seem to show much happening right now since Step #1 is a “Wait
Step.” Press the FCTN key.
In one display you’ll see the “WT” (Wait for) time you
programmed into Step
#1.
The
1500
is
watching for its real time to match that
programmed time.
Now use the MODE
key to
move to the
CHG
PARA
mode with the
TlME
LED also ON.
You can watch as real time approaches your programmed time. When the times
match, the step
number changes
to 02.
You will also see the Ch-1 and Ch-2 Event
lights come ON to coincide with the Events you programmed for Step
#2.
As
the
program runs its course, you can use the
MNTR DATA mode and the FCTN
key to view the process. As you observe the varying data, the individual functions will
become
quite
clear.
After you have
observed
the program for awhile, read the
following information to gain an even more detailed understanding.
CAUTION:
You
now
have a
basic
under-
standlng of how
the
Series
1500
handles a control
program. Please
read and then
continue
to refer
to the following
fine
points.
The
“Helpful Hints”
sectlon
will
raise
your
skills
with
the Series 1500
to the highest
level.
f?
Helpful Hints
Here are some Series 1500 fine points:
1.
Halt Conditions
A.
A Blank Step halts the Series 1500. A “Blank Step” is any step which is not
programmed. An “SP” will appear in the Function Display when you select
a Blank Step with the MODE key.
B.
The Series 1500 can enter the HALT
condition
in two ways:
It encounters a
Blank Step in a program, or you press the RUN/HALT key while a program
is running.
22
WATLOW
Series 1500 User’s Manual
Sample Program, Chapter
2