Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
H-29
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
Comm
on I
te
te
ms
B
FX
3U
-4AD
FX
3UC
-4
A
D
C
FX
3U
-4A
D
D
-A
D
P
D
FX
3G
-2A
D
D
-BD
E
FX
3U
-4DA
F
FX
3U
-4D
A
A
-AD
P
P
G
FX
3G
-1D
A
A
-BD
H
FX
3U
-3
A-
ADP
I
FX
3U
-4
A
D
-P
T
-
A
D
P
J
FX
3U
-4A
D
D
-P
TW
-
A
A
D
P
5. Changing of Input/output Characteristics
Use the scaling instruction (SCL/FNC 259) for the FX
3U
/FX
3UC
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
/FX
3U
/FX
3UC
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.
(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
5V
1V
0
10000
Digital value actually obtained
by A/D conversion
by A/D conversion
2000(5V)
400(1V)
Di
g
ita
l o
u
tp
u
t to
be c
a
lc
ulat
ed
(D110)
Voltage input characteristics
(product specifications)
(product specifications)
Digital output value to be changed
X-axis
Y-axis
D
igital output