274
Write an allocation change code to the output for allocation changes. The follow-
ing is the format of the allocation change code.
C
0
Data number on the input side (select from the following table)
Data number on the output side (select from the following table)
Output side
Input side
Enabled
No.
Contents
No.
Contents
0
Set point
0
Set point
Always enabled.
1
Proportional band
1
Proportional band
For PID control.
2
Integral time
2
Integral time
For PID control.
3
Derivative time
3
Derivative time
For PID control.
4
Hysteresis
4
Hysteresis
For ON/OFF control.
5
Control period
5
Control period
For PID control.
6
Input shift
6
Input shift
Always enabled.
7
(Not selectable)
7
Process value
Always enabled.
8
(Not selectable)
8
Manipulated variable
Always enabled.
9
(Not selectable)
9
Status
Always enabled.
Example
If the user wants to write derivative time to the output word and a control period to the input
word, input C350 as the allocation change code to be written.
Note When the Temperature Control Unit is turned on, the allocation change code
“C070” will be written.
Use the following procedure on the Programming Console for allocation chan-
ges.
Default: SP = 100
°
C and PV = 98
°
C
c100 c001
0100 0098
Write the allocation change code “C350” to the output word of the relevant loop
and confirm that the input word will become C350.
c100 c001
c350 c350
Write the derivative time to the output word so that the control period will be read
from the input word.
c100 c001
0040 0020
Note To put the Temperature Control Unit into expansion mode, change the jumper
pin on the side of the Unit from 2 and 3 to 1 and 2.
AT (Expansion Mode)
Section 3-6
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