Changing Of Input Characteristics; Example: Changing Of Voltage Input Characteristics - Mitsubishi Electric MELSEC-FX3S Series Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U
FX -2AD-BD (2-channel Analog Input)
3G
5.

Changing of Input Characteristics

The input characteristics can be changed using sequence programs in FX
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 5 V) to the digital output range of 0 to 10000.
1. Input characteristics
2. Example of program (For FX
For example, create the following program to change the digital input data of the board A:
M8001
Normally OFF
M8000
Normally ON
M8002
Initial pulse
M8000
Normally ON
M8000
Normally ON
FNC230
D110 K400
LD>=
M10
D-22
PLC User's Manual - Analog Control Edition
3UC
Voltage input characteristics
(product specifications)
4000
2000
400
0
1V 5V
Analog input
Series PLC)
3G
FNC 12
MOV
FNC 12
MOV
FNC 12
MOV
FNC 12
MOV
FNC237
AND<=
FNC 21
SUB
FNC 22
MUL
FNC 23
DDIV
5.1 Example: Changing of Voltage Input Characteristics
Digital output value to be changed
10000
10V
M8260
D8268 K4M0
RST M6
RST M7
K4M0 D8268
K1 D8264
D8260 D110
D110 K2000 M10
D110 K400 D111
D111 K10000 D112
D112 K1600 D100
5 Changing of Input Characteristics
/FX Series PLCs.
3S 3G
Y-axis
X-axis
0
400(1V) 2000(5V)
Digital value actually obtained
by A/D conversion
Sets the input mode of channel 1 to the
voltage input mode (0 V to 10 V).
Error status : b6=OFF
Error status : b7=OFF
Sets the averaging scaling to "1" for
the channel-1 data.
Check to make sure the digital
value (D110) is in range.
Calculation for changing input
characteristics.
Stores the operation result in D100.