WLI-PCM User’s Manual
115
An IP address must be set for each computer and other devices on the TCP/IP
network. There are several rules to observe when assigning an IP address to a
computer on the network.
■
Rule 1
The same address cannot be assigned to multiple devices on a single network.
The IP address of each device must be unique.
<Example>
Computer A: 192.168.1.1 (255.255.255.0)
Computer B: 192.168.1.2 (255.255.255.0)
Computer C: 192.168.1.3 (255.255.255.0)
:
:
Computer X: 192.168.1.254 (255.255.255.0)
The code in the brackets is the sub net mask. If the IP address is set to
"192.168.x.x", the sub net mask should be "255.255.255.0".
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Rule 2
You cannot assign the network start address (XXX.XXX.XXX.0) or end address
(XXX.XXX.XXX.255) to a device on the network. The network number is
included in the IP address, and communication is impossible if the network num-
ber is different.
<Example>
If the sub net mask is "255.255.255.0", devices are regarded to be on the same
network when the first 3 elements of the IP address are the same. The IP
address represents the network number when the 4th element of the address is
"0".
Network A: 192.168.1.0 (network 192.168.1)
Network B: 192.168.2.0 (network 192.168.2)
Network C: 192.168.15.0 (network 192.168.15)
Network D: 192.168.133.0 (network 192.168.133)
Network E: 192.168.202.0 (network 192.168.202)
Networks A through E are recognized as different networks and intercommunica-
tion is impossible.
Assign IP address
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