SEW-Eurodrive DFE32B PROFINET IO, Руководство пользователя

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Manual – DFE32B Fieldbus Interface PROFINET IO
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TCP/IP addressing and subnetworks
Assembly and Installation Notes
determine the node address ( → following table).
The class C network with the address 192.168.10. is further subdivided into
255.255.255.128 using the subnet mask. Two networks are created with the address
192.168.10.0 and 192.168.10.128.
The following node addresses are permitted in the two networks:
• 192.168.10.1 ... 192.168.10.126
• 192.168.10.129 ... 192.168.10.254
The network nodes use a logical AND operation for the IP address and the subnet mask
to determine whether there is a communication partner in the same network or in a dif-
ferent network. If the communication partner is in a different network, the standard gate-
way is addressed.
Standard gateway The standard gateway is also addressed via a 32-bit address. The 32-bit address is rep-
resented by four decimal numbers separated by decimal points.
Example: 192.168.10.1
The standard gateway establishes a connection to other networks. In this way, a net-
work node that wants to address another node can use a logical AND operation with the
IP address and the subnetwork mask to decide whether the desired node is located in
the same network. If this is not the case, the node addresses the standard gateway
(router), which must be part of the actual network. The standard gateway then takes on
the job of transmitting the data packages.
Byte 1 Byte 2 Byte 3 Byte 4
IP address
decimal 192 . 168. . 10 . 128
binary 11000000 . 10101000 . 00001010 . 10000000
Subnet mask
decimal 255 . 255 . 255 . 128
binary 11111111 . 11111111 . 11111111 . 10000000