Publication 1747-RM001G-EN-P - November 2008
SLC Communication Channels 13-23
Optimal Performance: PC to SLC 5/05 Processor (2-node Ethernet network)
SLC 5/05 and PC Connections to the Ethernet Network
TCP/IP is the mechanism used to transport Ethernet messages.
The SLC 5/05 processor uses TCP/IP to establish sessions and to send MSG
commands. Connections can be initiated by either a client program
(INTERCHANGE or RSLinx application) or a processor. Refer to the MSG
instruction operation in chapter 12 for information on how connections are
established using the MSG instruction.
The SLC 5/05 Ethernet connector conforms to ISO/IEC 8802-3 STD 802.3
and utilizes twisted pair media. Connections are made directly from the SLC
5/05 to an Ethernet hub or switch. The network setup is simple and cost
effective. The typical network topology is pictured below, as well as an
alternate point-to-point connection using an RJ-45 cross-over cable.
Table 13.7 Optimal Performance: RSLinx to SLC 5/05 Processor (2-node Ethernet
network)
Operation Words MSG per Second Words per Second
Single Typed Read 1 105 105
Single Typed Read 20 99 1980
Single Typed Read 100 86 8600
Single Typed Read 256 71 18176
Ethernet Hub or
switch
to PC Ethernet Card
to SLC 5/05
Channel 1
RJ45 connectors on both
ends of straight-through
cable (twisted pair)
Typical Network
Topology
Alternate Point-to-Point
Connection
to PC Ethernet
Card
RJ45 connectors on both ends of the
cross-over cable (twisted pair)
to SLC 5/05
Channel 1
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