Ariens Path-Pro 136E User Manual Page 18

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LlNKing
Files
Table
5
-
LlNKing
to
Another File.
The Series 920 enables you to link
files
together. The LINK step allows you to link the
last step of a profile to the first step of another profile.
Lets edit the program again by adding a LINK step at the end of the profile. But first,
lets create another file.
If you run your program with a LINK going to a
non-existing
file,
you’ll receive
ER2
0036, the “no file found“ error. Follow Table 5 to add a LINK and a
new FILE to your program.
FILE? STEP STEP SP HOUR
MIN
SEC
EVl
EV2 FILE?
#
TYPE
1
8
LINK
.._
5
----_
..~--
5
1
SETPOINT
--_-
_I75
&___-._.
.
0
50..
ON
ON
_~
5 2
SETPOINT
175 0
0
20
ON ON
5. 3
SETPOINT
100 0
1
15
ON OFF
5 4
SETPOINT
100 0
0
10
ON OFF
5
5
SETPOINT
75 0
0
25
OFF OFF
5
6
STOP
Run your program again beginning at FILE
1,
STEP 8. Step through the menu to see
the step type you’re on, and time remaining. See what happens at the end of File
1.
The
WAITFOR
Step
Table 6
-
The
WAITFOR
Step.
FILE STEP
STEP
WPV
WHR
WMN
#
NPE
5 6
WAITFOR
75
-
5 7
STOP
The last step type we will work with is the
WAITFOR
step. This is
a
test step.
It com-
pares a specified temperature with the process temperature, before continuing the
program.
It also waits for programmed time to elapse before continuing with the pro-
gram. After the test is successful, the program continues to the next sequential step.
Return to PROGRAM and enter FILE? (5). Add a
WAITFOR
step to the end of that file.
WHR and WMN are unprogrammed. To program a
WAITFOR
time, enter your values
for WHR and WMN. The programmed
WAITFOR
time waits that time duration. Both
WAITFOR
process variable (WPV), and time
(WHR,WMN)
can be programmed simul-
taneously. Once a
WAITFOR
condition is satisfied, it won’t have to be performed again.
18
Run your program from FILE 5, STEP 1. If you don’t want to go through the entire
program, START your program at any STEP in FILE
1
or 5. When the program reaches
FILE 5, STEP 6, the HOLD LED begins flashing. This means the program is still
running, but is
HOLDing,
to
WAITFOR
the ACTUAL temperature to equal the
WATLOW Series 920 User’s
Manual
Sample
Proqram
Chapter
3
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