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The use of two PC Cards CP 1515 in one RLM can serve multiple purposes,
e.g.:
•
Doubling the capacity of the Radio Link Module.
A second PC Card inserted in the second slot of the Access Point RLM will
double the capacity of the Access Point RLM. This option might be used in
cases where a high rate of lost messages prevent fast data communication.
In larger organizations that make use of IP addressing for communications,
the network architecture may include different network segments (subnets),
typically separated by a router or gateway.
When installing the SIMATIC NET IWL infrastructure into this type of
network architecture, please note that all Radio Link Modules and wireless
stations must be installed on the same subnet, i.e. on the same side of the
router or gateway.
The roaming functionality does not work over routers. When RLMs are
connected to different subnets, a mobile station may lose its network
connection when it physically enters an area where the RLMs are connected
to a different subnet.
The configuration and management of your Radio Link Modules is managed
via the TCP/IP protocol stack. This means that each Access Point RLM and
computer that you wish to use to configure the RLMs must have a unique IP
address.
Industrial Ethernet Wireless LAN RLM Manager, CP 1515 Manager
C79000-G8976-C171-01
229
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