Rockwell Automation 1747-L5xx SLC 500 Modular Hardware Style User Manual - Manual (Page 240)

Publication 1747-UM011G-EN-P - June 2008
240 Communicating with Devices on an Ethernet Network
Ethernet Channel 1 8-pin 10Base-T Connector
The Ethernet connector is an RJ45, 10Base-T connector. The pin-out
for the connector is shown below.
When to use straight-through and cross-over pin-out:
• SLC 5/05 Ethernet port to 10/100Base-T Ethernet hub cables
utilize a straight-through pin-out (1-1, 2-2, 3-3, 6-6).
• Direct point-to-point 10/100Base-T cables connecting the SLC
5/05 Ethernet port directly to another SLC 5/05 Ethernet port (or
a computer 10/100Base-T port) require a cross-over pin-out
(1-3, 2-6, 3-1, 6-2).
Cables
Shielded and non-shielded twisted-pair 10/100Base-T cables with RJ45
connectors are supported. The maximum cable length between an
SLC 5/05 Ethernet port and a 10/100Base-T port on an Ethernet hub
(without repeaters or fiber) is 100 m (323 ft). However, in an industrial
application, cable length should be kept to a minimum.
Ethernet Connections TCP/IP is the mechanism used to transport Ethernet messages. On top
of TCP, the Client/Server Protocol is required to establish sessions and
to send the MSG commands. Connections can be initiated by either a
client program (INTERCHANGE or RSLinx application) or a processor.
The client program or processor must first establish a connection to
the SLC 5/05 processor to enable the SLC 5/05 processor to receive
solicited messages from a client program or another processor.
Pin Pin Name
1 TD+
2 TD-
3 RD+
4 not used by 10BASE-T
5 not used by 10BASE-T
6 RD-
7 not used by 10BASE-T
8 not used by 10BASE-T