Chapter 2. LED Operation and Connector Details
24 PACSystems* RX3i PROFINET IO-Scanner User Manual GFK-2737F
2.2 Ethernet Network Ports
The four external Ethernet ports (two RJ45 and two SFP Cages) are on the bottom of the module. Figure 4
shows the underside view of the RX3i PNS. Ports 1 and 2 are standard RJ45 connectors. Ports 3 and 4 are
Small Form-factor Pluggable (SFP) ports.
Figure 4: Underside of IC695PNS001 Showing Ethernet Ports
The two RJ45 ports provide 10/100/1000 Mbps copper interfaces. The two SFP cages accommodate user-
supplied SFP devices, which can support a number of different media types. Refer to SFP Modules for
Ethernet Ports in the Installation chapter for additional information about SFPs.
The two RJ45 ports support CAT5e/6 cabling of up to 100m. Each Ethernet port automatically senses the
type of network and adjusts speed and connection parameters.
The PROFINET protocol can be sent and received over any or all of the four external ports.
Devices connected to the PROFINET Scanner ports should have Ethernet Autonegotiation enabled. The
Ethernet ports can be disabled to support requirements such as IT policies for unused ports. Disabled
ports do not establish a link on their Ethernet network. RX3i PNS modules and other participating modules
can be connected in a daisy chain/line, or star topology. The ports can also be configured to limit their
advertised Autonegotiation setting. This can be used to force a copper interface to establish a link at
100 Mbps rather than 1 Gbps to have quicker link change detection during MRP operation.
Caution
Multiple ports on the Ethernet Interface must not be connected, directly or indirectly, to
the same device so as to form a circular network.
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