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14. Making Program Pattern Table and Data Table
Before setting program, make a program pattern table and data table.
14.1
Making Program Pattern Table
Please make a copy of the program pattern table (p.157), and follow the procedure below.
(1) Write a step SV, step time, PID block number, Wait function Enabled/Disabled for
each step from Step 1 in numerical order.
(Even if the same block number is used, write for every step.)
(2) Draw a line graph of step SV.
Program Pattern Table
Pattern 1
Step number
1
2
3
4
5
Step SV
500
500
1000
1000
0
Step time
0:30
1:00
0:40
1:00
2:00
PID block number
2
2
3
3
2
Wait function Enabled/Disabled
Enabled
Disabled
Enabled
Disabled
Disabled
(Fig. 14.1-1)
Explanation of Program Pattern Table
Program pattern table consists of Y axis which represents the step SV ( ,
), and X axis which
represents the step time (Hours : Minutes, Minutes : Seconds).
Step SV is considered to be the SV at the end of the step.
Step time is considered to be the step process time.
• The relation between the step SV and step time can be explained as follows.
Step 1: The control is performed so that the temperature reaches from 0 to 500
for 30 minutes.
Depending on the selection in [Program control start type], control is performed as follows.
• When SV start is selected: Performs control from the step SV set in [Step SV when
program control starts] so that the temperature reaches 500 .
• When PV start or PVR start is selected: Step SV and time are advanced to PV, and
control starts so that the temperature reaches 500 .
Step 2: The control is performed so that SV is maintained at 500
for 1 hour.
Step 3: The control is performed so that SV rises from 500
to 1000
for 40 minutes.
Step 4: The control is performed so that SV is maintained at 1000
for 1 hour.
Step 5: The control is performed so that SV drops from 1000
to 0
for 2 hours.
0
500
1000
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