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5 Changing of Input/output Characteristics
5.1 Example: Changing of Voltage Input Characteristics
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX
3U
-3A-ADP (2-channel analog Input, 1-channel analog output)
A
Common Items
B
FX
3U
-4AD
FX
3UC
-4AD
C
FX
3U
-4AD-ADP
D
FX
3G
-2AD-BD
E
FX
3U
-4DA
F
FX
3U
-4DA-ADP
G
FX
3G
-1DA-BD
H
FX
3U
-3A-ADP
I
FX
3U
-4AD-PT
-ADP
J
FX
3U
-4AD-PTW
-ADP
5. Changing of Input/output Characteristics
Use the scaling instruction (SCL/FNC 259) for the FX3U/FX3UC Series PLC to change the input/output
characteristics. FX
3G Series PLCs do not support the scaling instruction. Use sequence programs to change
the input/output characteristics.
→ For a detailed description of scaling instruction, refer to the FX
3G/FX3U/FX3UC Series Programming
Manual - Basic & Applied Instruction Edition.
5.1 Example: Changing of Voltage Input Characteristics
This section describes an example of a program that can change the digital output range of 400 to 2000
(when the voltage input is 1 to 5V) to the digital output range of 0 to 10000.
1. Input characteristics
0
4000
10V
Analog input
400
2000
5V1V
0
10000
Digital value actually obtained
by A/D conversion
2000(5V)
400(1V)
Digital output to
be calculated
(D110)
Voltage input characteristics
(product specifications)
Digital output value to be changed
X-axis
Y-axis
Digital output