Network topology – Cocoon POWERTALK 101 User Manual
Page 33
PowerTALK 101
32
Network Topology
PowerTALK 101 allows your Ethernet system to be used for control data transport tasks without
interfering with normal network operations. The units are 802.3 compliant and use protocols from
the TCP/IP suite, so they are fully routable and because they only use Ethernet capacity when
carrying data – they have very little affect on network performance.
WAN
LAN segment
LAN segment
Other
PowerTALK
PowerTALK
Other
PowerTALK
network
A
B
network
‘N’
equipment
equipment
data in/out
data in/out
data in/out
Each unit has two RS232C ports and a network port. Normally DB-9 connectors and 10-BASE-T
are assumed, but DB-25, 10-BASE-2 and 10-BASE-5 is also available. You may connect as
many units as you wish to the network and establish logical connections between units with
complete flexibility. For example, imagine two units each connected to a network, but at some
distance from each other. The two ports could be set up as shown below so that they all carry
data simultaneously -
DD
RS232
RS232
DD
EE
RS232
RS232
EE
PowerTALK
PowerTALK
A
B
2 logical circuits carried by Ethernet LAN.