Contemporary Control Systems EIS UL864-Compliant Switches - Manual

EISwitch
A Line of Fixed-Port Industrial Ethernet 10/100 Mbps Switches
INSTALLATION GUIDE
INTRODUCTION
The EIS series — Ethernet Interconnect Switch in the CTRLink
®
family —
provides a solution for those industrial applications requiring a larger
network diameter and greater throughput. The EIS series is an essential
element of the control strategy.
Classified as switching hubs, each device segments the Ethernet network into
separate collision domains. The EIS8-100T offers eight ports of expansion
via twisted-pair cabling. Three models offer two fibre ports when greater
distance or galvanic isolation is required while offering four twisted-pair
ports for local drops: The EIS6-100T/FC and EIS6-100T/FT accommodate a
multimode fibre backbone and the EIS6-100T/FCS accommodates single-
mode fibre.
Each switch functions as a ―bridge‖ between the various data links —
creating a larger network diameter than can be achieved with repeating hubs.
To optimize speed and throughput, some functions are automatically
negotiated:
Each twisted-pair port automatically optimises its data rate to 10 Mbps
or 100 Mbps. The data rate of fibre ports is fixed at 100 Mbps.
Each port negotiates flow control — supporting the PAUSE function
for full-duplex links, and the backpressure scheme for half-duplex links.
The switch learns the ports of devices by reading Ethernet frames and noting
source addresses. It then creates and maintains a table of addresses and port
assignments by which traffic is restricted to only those ports party to a data
exchange. This allows other data to be simultaneously exchanged on other
ports — with improved throughput. If a broadcast, multicast, or unicast
transmission to an unknown destination arrives at a port, all other ports
receive the transmission.
The switch front-panel features LEDs for link status, port activity, and data
rate of each port. All units operate from low-voltage AC or DC power and
are either DIN-rail or panel mountable.