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[3] Physical implementations of an FL-net
There are five physical implementations of an Ethernet network that support a 10M bps data transfer
speed. They are 10BASE5, 10BASE2, 10BASE-T, 10BASE-F, and 10BROAD36 (this is not common/).
In addition to these implementations, a 100M bps Ethernet transmission speed is also available.
The FL-net supports 10BASE5 (recommended), 10BASE2, and 10BASE-T hardware.
[4] IP addresses on the FL-net
In order to identify one communication device among lots of devices connected to an Ethernet network,
the FL-net uses IP addresses (INET address). Therefore, each device that is connected to the network
mist have its own IP address.
An IP address consists of one part that identifies the network to which the device is connected, and a
unique device address. Depending on the size of the network, a network can be classified as one of
three classes: A, B, and C. (For special use, class D and E are also available.)
Classes of IP address
Top octet value
Class A
0 to 127
Class B
128 to 191
Class C
192 to 223
(Note: The gray digits are respective addresses.)
In a network, the IP address of all the communicating devices connected to this network will have the
same network address. They should each have a unique device address.
The default value for the FL-net IP address is "192.168.250.N" (N is the node number: 1 to 254). The
FL-net standard recommends using a class C IP address and the lower three digits of the address can
be used to assign node numbers according to the FL-net protocol.
Fixed
Network address section
xxx.xxx.xxx.xxx
xxx.xxx.xxx.xxx
xxx.xxx.xxx.xxx
Network address
FL-net IP address
15-13
Chapter 15: Appendix
Device address section
Xxx.xxx.xxx.xxx
Xxx.xxx.xxx.xxx
Xxx.xxx.xxx.xxx
Device address
15
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