GE
Intelligent Platforms
HUB-5595
2Gb/s Reflective Memory Hub with DIN Rail Mount Enclosure
Features
•t For use with GE Intelligent Platforms
5565 Reflective Memory network of
products
•t Provides eight ports using small form
factor pluggable (SFP) transceivers
•t Hub assemblies can be cascaded with
a maximum of 256 nodes
•t Automatically bypasses defective or
disconnected nodes in a fiber-optic
network
•t Automatic bypass can be optionally
controlled by the loss of signal or by the
loss of sync pattern
•t Each port regenerates the serial optical
signal, eliminating link losses and
reducing jitter
•t 10BaseT Ethernet TCP/IP port for remote
access and control
•t RS232 port for local access and control
•t DIN rail mount enclosure uses 21 to 32
VDC power supply
•t Dark on Dark option turns off the port’s
transmitter if the receiver does not
detect a signal (available for firmware
versions 02.00 and later)
The HUB-5595 is a managed hub designed
to operate with the GE Intelligent Platforms
5565 family of Reflective Memory real-time
network products. The Reflective Memory
hub can automatically bypass ports when
it detects a loss of signal or the loss of valid
synchronization patterns, allowing the other
nodes in the network to remain operational.
Since the optical ports are implemented
with small form factor pluggable (SFP)
transceivers, only the required ports need
to be populated. The hub’s SFP transceivers
can be a combination of either multimode
(short distance) or single-mode (long distance)
transceivers. This feature permits a cost
saving in small networks as well as system
optimization. For larger networks, several
hub assemblies can be cascaded, permitting
a managed hub array with up to 256 nodes.
Each port regenerates the serial optical signal,
eliminating the problems with insertion
losses and cable attenuation. Signal regeneration also reduces jitter. The RS232 port
gives you the ability to monitor and control
your Reflective Memory network through a
simple PC serial port. The Ethernet port
feature allows you to monitor and control
the hub from great distances through a local
area network (LAN) or via a Web browser.
The HUB-5595 has a DIN rail mountable
enclosure. It operates on DC power, from
21VDC to 32VDC, to permit use in many
industrial environments.
The hub automatically bypasses ports when
the absence of valid synchronization patterns is detected. Three LEDs, adjacent to
each port, provide a visual indication of the
port status. Additional status indications and
modes of operation are available through
either the serial port or the Ethernet port.
Status information includes the detection
of installed transceivers, the detection of
signal (light), the detection of valid synchronization patterns and the port operation
speed (2 Gb/s). Control registers allow the
channel bypass to be based on the absence
of a single valid synchronization pattern or
multiple synchronization patterns. A bypass
can also be based simply on the loss of a
signal (light). In addition, each port can be
manually forced either active or bypassed
regardless of the status indicators.
An additional control register permits the
transmitter of any port to be manually disabled.
Front panel manual switches include a
recessed momentary reset switch and a
Gang Select switch. The Gang Select switch
configures the hub ports as one loop of
eight ports or two separate loops of four
ports each.