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B-19
4 Analog Input
4.1 Analog Input Procedures
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
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX3U-4AD/FX3UC-4AD (4-channel Analog Input)
3 Creation of sequence program
Create the program as follows to read analog signals.
• While referring to step 2, set the input mode "H****".
• While referring to step 1, set the unit number in
- Program Example (For FX
3U, FX3UC Series PLCs)
*1
*1. Use the FROM and TO instructions in FX3G PLCs.
4 Sequence program transfer and data register check
1) Transfer the sequence program, and start the PLC.
2) The 4AD analog data input mode will be stored in data registers (D0 to D3) of the PLC.
3) Check that the data is stored in D0 to D3.
→ If the data is not properly stored, refer to Chapter 8 "Troubleshooting."
M8002
FNC 12
MOV
H**** U
\GO
P
M8000
K50
T0
T0
Specify the input mode (BFM #0) for channels
1 to 4.
Initial pulse
FNC 15
BMOV
U
\G10 D0 K4
5 seconds after starting the PLC, the digital
values of channels 1 to 4 (BFM #10 to #13) will
be read out to D0 to D3.
Input mode (step 2)
Unit number (step 1)
Unit number (step 1)
RUN monitor