Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
D-13
4 Programming
4.1 Loading of A/D Conversion Data
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX
3G
-2AD-BD (2-channel analog Input)
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
4. Programming
This chapter describes how to create programs that can read analog data using the 2AD-BD.
4.1
Loading of A/D Conversion Data
1) The input analog data will be converted into digital data and then stored in the special devices of the FX
3G
Series PLC.
2) If the data is stored in the special devices, the averaging time can be set, and the input mode can be
specified.
3) Special auxiliary relays (10 points) and special data registers (10 points) are assigned respectively to the
analog expansion board connected to the option connector 1 and the analog expansion board connected
to the option connector 2 in this order.
to the option connector 2 in this order.
→ For a detailed description of special device assignment, refer to Section 4.2.
• FX
3G
Series PLC
The analog expansion board connected to the option connector 1 is regarded as the 1st unit, and the
analog expansion board connected to the option connector 2 is regarded as the 2nd unit.
analog expansion board connected to the option connector 2 is regarded as the 2nd unit.
*1.
The second analog expansion board is not available in the FX
3G
Series PLC(14-point and 24-point
type).
FX
3G
Series PLC
Sequence Program
Special auxiliary relays:
M8260 to M8269
M8270 to M8279
D8260 to D8269
D8270 to D8279
Special data register:
1st
A/D
FX
3G
-2AD-BD
FX
3G
-2AD-BD
A/D
2nd
*1
Option connector 1
Option connector 2
Special data register:
Special auxiliary relays: