Fieldbus
238 (428) 9836 3123 01
15.8.9 FL-Net
FL-Net is a control network, primarily used for interconnection of devices like PLCs, Robot controllers,
and Numerical Control Devices. FL-NET has both cyclic data and message data. There is no master on a
FL-Net network; a token communication method is used for data transmission.
The FL-Net network is based on IP/UDP broadcast messages.
The module is classified as a “Class 1” FL-Net node as it can both send and receive cyclic data.
PF only transfer cyclic data and only use area 2.
Cyclic transfer
FL-Net has two areas for cyclic data, Area 1 and Area 2. These two memory areas are shared by all nodes
on the network. And every node configures the part of the area it updates.
Area 1 is 512 words.
Area 2 is 8192 words.
The cyclic data is mapped to the module I/O area, which maximizes the size of I/O data to 512 bytes in
each direction-for the module.
The time from reception of a token until transmission should not exceed 1.56 ms.
Indicators
Module is connected to Ethernet
Indicates that the unit must be replaced (For example, invalid MAC ID) or Anybus
watchdog in was not updated.
Flash green each time a packet is received or transferred
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