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1. Functional description
The 10/100BASE-T(X) ports of an SPIDER
5TX represent a terminal connection for the
connected LAN segment. You can connect
single devices or complete network
segments.
1.1 FRAME SWITCHING FUNCTIONS
Store and Forward
All data received by the SPIDER 5TX from
the system bus or at the ports are stored
and checked for validity. Invalid and defec-
tive frames (> 1.522 byte or CRC error) as
well as fragments (< 64 byte) are discarded.
The SPIDER 5TX forwards the valid frames.
Multi address capability
An SPIDER 5TX learns all source addresses
per port. Only packets with
– unknown addresses
– addresses learnt at this port
– a multi/broadcast address
in the destination address field are sent to
this port.
An SPIDER 5TX learns up to 1,000 addres-
ses. This becomes necessary if more than
one terminal device is connected to one or
more ports. In this way several independent
subnetworks can be connected to an
SPIDER 5TX.
Learnt addresses
An SPIDER 5TX monitors the age of the
learned addresses. The SPIDER 5TX deletes
address entries from the address table
which exceed a certain age (300 seconds).
Note:
Restarting deletes the learned
address entries.
Tagging
(IEEE 802.1Q)
The IEEE 802.1 Q standard designates the
VLAN tag to be included in a MAC data
frame for the VLAN and prioritizing func-
tions. The VLAN tag consists of 4 bytes (2
bytes tag protocol identifier TPID, 2 bytes
tag control information TCI). It is inserted
between the source address field and the
type field. Data packets with VLAN tag are
transmitted unchanged by the SPIDER 5TX.
1.2 SPECIFIC FUNCTIONS OF THE
TP/TX INTERFACE
Link control
The SPIDER 5TX monitors the connected TP
line segments for short-circuit or interrupt
using regular link test pulses in accordance
with IEEE standard 802.3 10BASE-T/-
100BASETX. The SPIDER 5TX does not
transmit any data to a TP segment from
which it does not receive a link test pulse.
Note:
A non-occupied interface is assessed
as a line interrupt. The TP line to terminal
equipment which is switched off is likewise
assessed as a line interrupt as the de-
energised bus coupler cannot transmit link
test pulses.
Auto polarity exchange
If the receive line pair is incorrectly connec-
ted (RD+ and RD- switched) polarity is auto-
matically reversed.
Autonegotiation
Autonegotiation is a procedure in which the
switch automatically selects the operating
mode of its 10/100 RJ-45 ports. When a
connection is set up for the first time, the
switch detects the speed (10 or 100 Mbit/s)
and the transmission mode of the connec-
ted network (half duplex or full duplex).
Autocrossing
The SPIDER 5TX detects the transmit and
receive pairs (MDI, MDI-X). The SPIDER 5TX
automatically configures its port for the cor-
rect transmit and receive pins. Consequent-
ly it does not matter whether you connect
devices using a cross-over or straight cable.
1.3 FURTHER FUNCTIONS
AND FEATURES
Reset
The SPIDER 5TX will be reset by the follo-
wing action:
– input voltages fall below a threshold
After a reset the following action is carried
through:
– initialization
1.4 DISPLAY ELEMENTS
Equipment status
These LEDs provide information about
statuses which affect the function of the
entire SPIDER 5TX.
P – Power
(green LED)
– lit:
– supply voltage present
Port Status
These LEDs display port-related
information.
DA/STAT 1 to 5 – Data, Link status
(green LED)
– not lit:
– no valid link
– lit green:
– valid link
– flashes green: – receiving data
10/100 1 bis 5 – Data rate
(yellow LED)
– leuchtet nicht: 10 Mbit/s link
– leuchtet yellow: 100 Mbit/s link
1.5 INTERFACES
10/100 MBit/s connection
Five 10/100 Mbit/s Ports (ports 1 to port 5, 8-
pin R45 sockets) on SPIDER 5TX allow ter-
minal equipment or five independent net-
work segments complying with the stan-
dards IEEE 802.3 100BASE-TX / 10BASE-T to
be connected. These ports support autone-
gotiation and the autopolarity function.
The pin configuration complies with MDI-X.
– Pin configuration
of the RJ45 socket:
– 1 line pair: pin 3 and pin 6
– 1 line pair: pin 1 and pin 2
– remaining pins: not used.
Fig. 2: Pin configuration of an TP interface
n.c.
Pin 8
n.c.
Pin 7
TD-
Pin 6
n.c.
Pin 5
n.c.
Pin 4
Pin 3
TD+
Pin 2
RD-
Pin 1
RD+
3pin terminal block
The supply voltage is connected via a 3pin
terminal block.
z
Warning!
The SPIDER 5TX devices are desi-
gned for operation with a safety
extra-low voltage. Thus, they may
only be connected to the supply
voltage connections with PELV
circuits or alternatively SELV circuits
with the voltage restrictions in
accordance with IEC/EN 60950.
– Voltage supply
: The supply voltage is
electrically isolated from the housing.
– Ground connection:
The SPIDER 5TX is
grounded via a pin of the 3pin terminal
block.
Fig. 3: Pin configuration of 3pin terminal
block
2. Configuration
2.1 CONNECTING DTE AND OTHER
NETWORK SEGMENTS
It is possible to connect up to five data ter-
minal equipments (DTE) or other network
segments to the 10/100 Mbit/s ports of the
SPIDER 5TX using twisted pair cabling (ref.
Fig. 4).
3. Assembly, startup procedure
and dismantling
3.1 UNPACKING, CHECKING
䡺
Check whether the package was deliver-
ed complete (see scope of delivery).
䡺
Check the individual parts for transport
damage.
z
Warning!
Use only undamaged parts!
3.2 ASSEMBLY
The equipment is delivered in a ready-to-
operate condition. The following procedure
is appropriate for assembly:
䡺
Pull the terminal block off the SPIDER
5TX and wire up the supply voltage lines.
䡺
Fit the SPIDER 5TX on a 35 mm stan-
dard bar to DIN EN 50 022.
䡺
Attach the upper snap-on slide bar of
the SPIDER 5TX to the standard bar and
press it down until it locks in position.
䡺
Fit the signal lines.
Notes:
– The SPIDER 5TX is grounded via a pin of
the terminal block.
– Do not open the housing.
+24 V
0 V
