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100 m (max) straight-through or crossover
cable. Cat. 5(e) Screened Twisted Pair cable is required between switches.
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To prevent ground loops, build this cable
assembly with a shielded, metal-enclosed RJ45 connector on one end and an
isolated, plastic-enclosed RJ45 connector on the other end. The metal connector
end of this cable assembly/link can be placed on either switch.
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100 m (max) straight-through cable. The
shield on the controller's RJ45 connector connects only to a Faraday cage in
the controller; not to the controller's DC ground. Therefore, the RJ45
connectors are floating and the single point of ground is made at the hub or
switch to which the controller is connected. Build this cable assembly with a
shielded, metal-enclosed RJ45 connector on
both ends.
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100 m (max) straight-through cable. To
prevent ground loops, build this cable assembly with a shielded, metal-enclosed
RJ45 connector on one end and an isolated, plastic-enclosed RJ45 connector on
the other end. The metal connector end of this cable assembly/link
must be placed on the switch and
not on the PC.
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If switch management is to be used over
the network via telnet or a web browser, be aware that access privileges and
port configuration requirements exist for the twisted pair switch-to-switch
links. Refer to "Managing Cisco Switches" in Books Online for information.
Refer to the Cisco documentation for web management information. A dedicated
non-DeltaV PC is required for switch management.
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The Management station has special
hardware and software requirements. Refer to the related topics for information
on the management station before connecting the station to the DeltaV Control
Network.
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All twisted pair ports are configured to
auto-sense speed and auto-negotiate duplex. Do not hard-configure speed or
duplex on the twisted pair switch ports or duplex mismatches, which create
communications failures, will occur. Always allow the switch to auto-sense
speed and auto-negotiate duplex.
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The switch is equipped with two gigabit
slots that require a fiber-optic or twisted pair small form factor pluggable
(SFP) module (not used in the preceding network drawing ). These slots always
operate at 1000Mbit (gigabit) full duplex when fitted with the SFP module.
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