User guide
Installin
g
and Confi
g
urin
g
the Module
16
840 USE 115 00 Version 1.0
Consult
y
our network administrator to see if an
y
of these conditions appl
y
. If the
y
do, follow the directions on pa
g
e 20 for chan
g
in
g
the default confi
g
uration.
Note:
If
y
ou will be chan
g
in
g
the default confi
g
uration,
y
ou should stop the
controller, then install the module, then chan
g
e the confi
g
uration
before
startin
g
the
controller a
g
ain.
The Ethernet web embedded server module onl
y
reads its confi
g
uration data at
power-up and when it is reset. Whenever the confi
g
uration data is chan
g
ed, the
module must be reset, either b
y
hot swappin
g
or throu
g
h a reset command in the
MSTR block
(
see pa
g
e 37
)
. Once the module is installed, stoppin
g
and restartin
g
the controller will not reset it.
2.1.2 Verifyin
g
that the Network Has Been Constructed Properly
You should not connect an Ethernet web embedded server module directl
y
to
another device with a len
g
th of cable. For the network to operate properl
y
,
y
ou
must route the cable for each device throu
g
h an Ethernet hub. Hubs are widel
y
available and can be purchased from man
y
suppliers.
Figure 8 Improper Network Topologies
Figure 9 Proper Network Topology
NOE
NOE
NOE
NOE NOE
Hub