Practical Example 2 - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
10.2

Practical Example 2

This program executes the same control as practical example 1 shown earlier from one communication port
(ch1) to two inverters (Station number: 0 and 1).
10.2.1 System configuration example
An FX PLC (ch1) is connected to two inverters (Station number: 0 and 1).
FX FX
3S, 3G,
10.2.2 Contents of operation
Differences from the practical example 1 are the following three points:
• The PLC executes communication from one communication port to two inverters.
• Status is not being read when a write to inverter command is given.
• The PLC only writes when it detects that contents to be written have changed since last being written.
Inverter A
FX FX FX (station number 0)
3GC, 3U, 3UC
Distributor
10 Practical Program Examples (FX3S, FX3G, FX3GC, FX3U, FX3UC)
Inverter B
(station number 1)
Distributor
10.2 Practical Example 2
Terminal resistor
E-125
A
B
C
D
E
F
G
H
I
Apx.A