Programming - Mitsubishi FX3U-4AD User Manual

FX /FX /FX PLC User's Manual - Analog Control Edition
3G 3U 3UC
FX -2AD-BD (2-channel analog Input)
3G
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
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.
• FX Series PLC
3G
Special auxiliary relays:
Special data register:
Option connector 1
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.
*1. The second analog expansion board is not available in the 14-point and 24-point type main unit.
→ For a detailed description of special device assignment, refer to Section 4.2.
FX Series PLC
3G
Sequence Program
M8260 to M8269
D8260 to D8269
A/D
FX -2AD-BD
3G
1st
Special auxiliary relays:
M8270 to M8279
Special data register:
D8270 to D8279
Option connector 2
A/D
FX -2AD-BD
3G
*1
2nd
4 Programming
4.1 Loading of A/D Conversion Data
D-13
A
B
3G
C
D
E
F
G
H
I
J