E-93
FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
10 Practical Program Examples (for FX3U and FX3UC PLCs)
10.2 Practical Example 2
A
Common Items
B
N:N Network
C
Parallel Link
D
Computer Link
E
Inverter
Communication
F
Non-Protocol
Communication
(RS/RS2 Instruction)
G
Non-Protocol
Communication
(FX
2N
-232IF)
H
Programming
Communication
I
Remote
Maintenance
Apx.
Discontinued
models
10.2 Practical Example 2
This program executes the same control as the practical example 1 shown above.
10.2.1 System configuration example
An FX PLC (ch 1) is connected to an inverter.
10.2.2 Contents of operation
The differences from practical example 1 are that the inverter status is not read while data is written to an
inverter, and the contents to be written are written to an inverter only when change in the contents to be
written are detected.
Because communication between the PLC and the inverter is minimum in this program, the communication
time is reduced and the response time is improved.
FX
3U,
FX
3UC
Terminal resistor
Distributor
Inverter
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