Ethernet Network Ports - Emerson PACSystems RX3i User Manual

User Manual
GFK-2737L
2.2

Ethernet Network Ports

The four external Ethernet ports (two RJ45 and two SFP Cages) are on the bottom of the
module. Figure 6 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 6: 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 Section 3.5 3.5 below SFP Modules for Ethernet Ports, 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 Auto negotiation
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
•
•
LED Operation and Connector Details
Multiple ports on the Ethernet Interface must not be connected, directly or
indirectly, to the same device so as to form a circular network.
Port disable settings are non-volatile. If an SFP port is configured as the only enabled
port and that SFP is removed, the RX3i Scanner will not be accessible until an SFP is
returned to that port.
Section 2
Jul 2022
28