Rockwell Automation 1783-Mxxx Stratix 8000 and 8300 Ethernet Managed Switches User Manual - Manual (Page 47)

Rockwell Automation Publication 1783-UM003I-EN-P - March 2014 47
Getting Started Chapter 2
Hardware Features These features are common to both the Stratix 8000 and Stratix 8300 switches.
See the figures on
pages 44…46 for an illustration of these features.
Feature Description
Power and relay connector You connect the DC power and alarm signals to the switch through two front panel connectors. One connector provides primary DC power (supply A)
and the major alarm signal, and a second connector (supply B) provides secondary power and the minor alarm signal. The two connectors are
physically identical and are in the upper left side of the front panel.
The switch can operate with a single power source or with dual power sources. When both power sources are operational, the switch draws power
from the DC source with the higher voltage. If one of the two power sources fail, the other continues to power the switch.
The power and relay connectors also provide an interface for two independent alarm relays: the major alarm and the minor alarm. The relays can be
activated for environmental, power supply, and port status alarm conditions and can be configured to indicate an alarm with either open or closed
contacts. The relay itself is normally open, so under power failure conditions, the contacts are open. From the Command Line Interface (CLI), you can
associate any alarm condition with one alarm relay or with both relays.
Console port For configuring, monitoring, and managing the switch, you can connect a switch to a computer through the console port and the supplied RJ45-to-
DB-9 adapter cable. If you want to connect a switch to a terminal, you need to provide an RJ45-to-DB-25 female DTE adapter.
Dual-purpose uplink ports The two dual-purpose uplink ports can each be configured for RJ45 (copper) or SFP (fiber) media types. Only one of these connections in each of the
dual-purpose ports can be active at a time. If both ports are connected, the SFP module port has priority.
You can set the copper RJ45 ports to operate at 10, 100, or 1000 Mbps, full-duplex or half-duplex. You can configure them as fixed 10, 100, or
1000 Mbps (Gigabit) Ethernet ports and can configure the duplex setting.
You can use approved Gigabit (or 100 Mbps) Ethernet SFP modules to establish fiber-optic connections to other switches. These transceiver modules
are field-replaceable, providing the uplink interfaces when inserted in an SFP module slot. You use fiber-optic cables with LC connectors to connect
to a fiber-optic SFP module. These ports operate full-duplex only.
10/100 ports You can set the 10/100 ports to operate at 10 or 100 Mbps, full-duplex or half-duplex You can also set these ports for speed and duplex
autonegotiation in compliance with IEEE 802.3-2002. The default setting is autonegotiate.
When set for autonegotiation, the port senses the speed and duplex settings of the attached device. If the connected device also supports
autonegotiation, the switch port negotiates the best connection (that is, the fastest line speed that both devices support and full-duplex
transmission if the attached device supports it) and configures itself accordingly. In all cases, the attached device must be within 100 m (328 ft) of
the switch.
100BASE-FX ports The IEEE 802.3-2002 100BASE-FX ports provide full-duplex 100 Mbps connectivity over multi-mode fiber (MMF) cables. These ports use a built-in,
small-form-factor fixed (SFF) fiber-optic transceiver module that accepts a dual LC connector. The cable can be up to 2 km (1.24 mi.) in length.
PoE ports The PoE expansion modules provide 10/100BASE-T PoE or PoE+ capability to the switch:
• The 1783-MX04E expansion module has four ports that support PoE (IEEE 802.3af) and PoE+ (IEEE 802.3at Type 2). You can configure the four
PoE/PoE+ ports on the expansion module in any combination of PoE and PoE+.
• The 1783-MX04T04E expansion module provides four ports that support PoE (IEEE 802.3af) and PoE+ (IEEE 802.3at Type 2) and four 10/
100BASE-T non-PoE ports. You can configure the four PoE/PoE+ ports on the expansion module in any combination of PoE and PoE+.
The PoE expansion modules require a dedicated power supply for power. For power requirements, see page 31 .
Rear panel The rear panels of the switches and expansion modules have latches for installation on either a DIN rail or a wall. The latches slide outward to
position the switch over the DIN rail and slide inward to secure the switch to a DIN rail. The feet must be extended when mounting the switch on
heavy-duty (35 x 15 mm) DIN rail or they can be extended for improved ventilation when wall mounting.
Auto-MDIX When connecting the switch to workstations, servers, and routers, straight-through cables are normally used. However, the automatic
medium-dependent interface crossover (auto-MDIX) feature of the switch automatically reconfigures the ports to use either straight-through or
crossover cable type.
The Auto-MDIX feature is enabled by default. When the auto-MDIX feature is enabled, the switch detects the required cable type (straight-through
or crossover) for copper Ethernet connections and configures the interfaces accordingly.
You can use the command-line interface (CLI) to disable the auto-MDIX feature. See the online help for more information.