Contemporary Controls CTRLink EISM5-100T Installation Manual

EISM5-100T
Industrial Ethernet 10/100 Mbps Miniature Switching Hub
Installation Guide
The EISM5-100T segments the Ethernet LAN into five collision domains. It
acts as a "bridge" between data links—creating a larger network diameter
than possible with repeating hubs. Each port automatically negotiates its
data rate to 10 Mbps or 100 Mbps and controls data flow with the PAUSE
function in full-duplex or the backpressure method in half-duplex.
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.
The switch learns port assignments by reading Ethernet frames and logs
source addresses on a table. With this information, it improves throughput
by restricting traffic to only 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 switch has five normal ports for attaching local devices. A sixth uplink
port allows cascading two hubs without the need of a crossover cable. In
addition to one power LED, each port has an LED showing link/activity/rate.
The EISM mounts on TS-32 or TS35 DIN-rail, can operate from a wide range
of low-voltage AC or DC power and offers redundant power connections.
Designed for Industrial Ethernet applications, the unit complies
with EMC immunity and emissions compatibility standards
for industrial environments.