Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
C-26
5 Changing of Input Characteristics
5.1 Example: Changing of Voltage Input Characteristics
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX
3U
-4AD-ADP (4-channel analog Input)
5. Changing of Input Characteristics
Use the scaling instruction (SCL/FNC 259) for the FX
3U
/FX
3UC
Series PLC to change the input
characteristics. FX
3G
Series PLCs do not support the scaling instruction. Use sequence programs to change
the input 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
In the example explained in this section, the voltage input data "1 to 5 V" (Digital output value: 400 to 2000) is
changed to the digital output value "0 to 10000".
changed to the digital output value "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)
D
igit
a
l out
put
t
o
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