Contemporary Controls CTRLink EISK8-100T Installation Manual

EISK8-100T
Plug and Play Switching Hub for Automation Systems
Installation Guide
The EISK8-100T Skorpion-8 switching hub is designed for the automation environment.
Like all Ethernet switches from Contemporary Controls, it features non-blocking (full
wire-speed) operation. It divides an Ethernet network into eight collision domains —
―bridging‖ data links to create larger network diameters than possible with repeating
hubs. Each port automatically negotiates its data rate to either 10 Mbps or 100 Mbps
— controlling data flow with the PAUSE function in full-duplex links or with the
backpressure method in half-duplex links.
The switch provides preamble regeneration with symmetry and amplitude compensation
— retiming signals to eliminate jitter. Digital pre-emphasis compensates for inherent
signal strength roll-off. Link integrity is monitored, verifying that a working adapter or
hub is on the distant end of a segment.
Port assignments are learned by reading Ethernet frames and logging the source
addresses to a table. Throughput is improved by restricting traffic to those ports party
to a data exchange — while other data is simultaneously exchanged on other ports.
Store-and-forward operation is implemented and broadcast, multicast, or unicast
transmissions are received by all ports.
The EISK8-100T has eight Auto-MDIX ports for attaching local devices. In addition to
a power LED, each port has one LED showing link/activity/rate and one showing
duplex status.
The unit operates from a wide range of low-voltage AC or DC power.
The EISK8-100T is provided with a writeable label for easy identification of the remote
device attached to each cable.