Yaskawa JAPMC-MC2303-E - Manual (Page 15)

1.1 What is FL-net?
1-2
1.1 What is FL-net?
As shown in Fig. 1.1, FL-net is a network capable of interconnecting various FA controllers such as the programmable
controllers (PLC) and computer numeric control equipment (CNC) from many manufacturers, and personal computers
for control and monitoring.
Fig. 1.1 Example of FA Control Network Configuration
1.2 FL-net Protocol
The following shows a basic FL-net protocol structure.
Fig. 1.2 Basic FL-net Protocol Structure
The transport and network layers use UDP/IP, while the data link and physical layers use Ethernet.
MP2200 218IF-02 262IF-01 LIO-04 SVB-01 CPU-02 LIO-04 LIO-04 LIO-01 LIO-01 MP2300 218IF-02 262IF-01 SVB-01
PC PC PC EWS
PLC PLC PLC
Server
WAN
Panel
controller CNC RC
Sensor actuator
Computer
Controller
Equipment
Upper LAN Ethernet 䋨TCP/IP, UDP/IP䋩
FL-net (Ethernet-based control network)
Field network
FA link protocol layer
Application layer
Transport layer
Network layer
Data link layer
Physical layer
Controller or interface
UDP
Token function
Service function
Cyclic transmission
Message transmission
IP
Ethernet
(Based on IEEE802.3)
FL-net
protocol