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D-19
4 Programming
4.7 Model Code
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX3G-2AD-BD (2-channel analog Input)
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
4.7 Model Code
Initial value: K3
Numeric data type: Decimal (K)
When the 2AD-BD is connected, model code "3" is stored in the corresponding special data register.
The following table shows the special data registers that store the model code:
Use the special data registers above to check whether a 2AD-BD is connected or not.
1. Program Example
4.8 Basic Program Example
Create the following basic program example to read out analog conversion (A/D conversion) data.
The following program will set the 1st board to voltage input mode and channel 2 to current input mode, and
will store the converted A/D value of channel-1 data into D100 and that of channel-2 data into D101.
Even if the input data is not stored into D100 or D101, the data registers D8260 or D8261 can be directly used
in the timer/counter setting value or in a PID instruction.
Special data register
Description
1st board 2nd board
D8269 D8279 Model code
Checks the model code of the 1st
analog board
FNC224
LD =
D8269 K3 Y007
M8001
Normally
ON
Normally
OFF
M8260
M8000
M8000
M8261
Sets the input mode of the 1st board
to the voltage input mode
(0 V to 10 V).
Sets the input mode of the 2nd board
to the current input mode
(4 mA to 20 mA).
M8002
Initial
pulse
RST M6
RST M7
Error status: b6 = OFF
Error status: b7 = OFF
M8000
FNC 12
MOV
K5 D8264
FNC 12
MOV
K5 D8265
Sets the averaging time to "5"
for channel-1 data.
Sets the averaging time to "5"
for channel-2 data.
M8000
FNC 12
MOV
D8260 D100
FNC 12
MOV
D8261 D101
Stores the A/D converted
channel-1 digital data into D100.
Stores the A/D converted
channel-2 digital data into D101.
FNC 12
MOV
D8268 K4M0
D8268K4M0
FNC 12
MOV