3. AIAO Units
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1-175
0
20
)
C
(
1
.
0
)
C
(
2
=
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
+
°
°
−
=
Y
•
The PT conversion curve only needs to be configured once. Configure CR#40
(prohibit configuration changes) to prevent the values from being changed.
2. Adjusted
Curve
+11,500
-1,000
+1150
-100
C
Measured
temperature
input
C
+11,500
-1,000
1150
-100
C
Digital output
Measured
temperature
input
C
-1,020
+11,480
2
Offset
C
3. Addresses
•
X0 = On: Set the input mode for CH1 to mode 0.
•
X1 = On: Set the Offset value for CH1 to 2°C (20).
•
M0 = On: Disable CH1 configuration changes.
4. Program
Description
y
When X0 = On, set CR#2 to K0 (H’0000) CH1 to mode 0 (J-Type).
y
When X1 = On, write K20 (Offset value for CH1) into CR#28.
y
When X1 goes from On to Off, set M0 = On to disable configuration changes to TC
conversion curve. Write K1 (H’1) into CR#40, b0=1.
5. Program example
Ladder diagram:
Explanation:
Set CH1 to mode 0 (J-Type)
Set the Offset value for CH1
X0
M0
X1
K0
K40
K1
K0
K1
TOP
K0
K1
M0
TOP
TOP
X1
SET
H0
K20
H1
K2
K28
Disable CH1 configuration
changes
