Mitsubishi Electric FX3U-ENET User Manual page 87

5 COMMUNICATION PROCEDURE
(Example) Class B
IP address 1 0 0 0 0 0 0 1
Subnet mask 1 1 1 1 1 1 1 1
IP address
1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 1 1 1 1
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(2) Subnet mask pattern (BFM#512, 513)
(a) Set the subnet mask.
Consult the network administrator for the setting.
(b) When not using the subnet mask, set any of the following table values
according to the class.
Class
Class A
Class B
Class C
*1 Ethernet networks include small-scaled network systems where multiple
devices are connected to one Ethernet hub along with medium and large-
scaled network systems where multiple small-scaled networks are
connected by routers, etc.
The subnet mask logically divides one network, where many devices are
connected, into multiple sub-networks to facilitate administration.
Network address
81
H
0 0 0 0 0 1 0 1
FF
H
1 1 1 1 1 1 1 1 1 1 1 1 1 1
Subnet address
81
H
POINT
(1) All devices on the same sub-network must have a common subnet mask.
(2) When not administrated by the sub-network, the connected devices need not
have a subnet mask. (Set the network address of the corresponding class.)
(3) Router IP address (BFM#514, 515)
Set the IP address of the router to be used when FX
the target device on another Ethernet network (refer to (4) below).
Set the value that satisfies the following conditions.
• Condition 1: The IP address class is either A, B or C.
• Condition 2: The sub-net address of the default router is the same as that of
the local station Ethernet module.
• Condition 3: The host address bits are not all "0" or all "1".
*1
(Setting range: C0000000 to FFFFFFFC
Mask value
FF000000
FFFF0000
FFFFFF00
05 2F
H H
0 0 1 0 1 1 1 1
FF FC
H H
05 2F
H H
MELSEC-F
)
H
H
H
H
01
H
0 0 0 0 0 0 0 1
00
H
0 0 0 0 0 0 0 0 0 0
Host address
01
H
0 0 0 0 0 0 0 1
-ENET communicates with
3U
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