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001
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R200
Manual
Switch
and
LED
The
4
switches
(SW
‐
1
to
SW
‐
4)
are
used
to
test
the
relay
functions.
The
LED’s
are
also
used
to
indicate
any
faults
that
might
occur
modes
that
the
software
can
end
in
(see
section:
fault
finding).
To
get
the
unit
into
boot
mode
(only
when
programming
over
RS
‐
232),
the
following
needs
to
be
done:
Press,
and
hold
all
4
switch
for
5
seconds
(until
all
4
LED
flashes
fast)
I/O
Ports
The
Neets
Control
–
AlFa
has
24
I/O
onboard.
They
can
be
used
for
external
keyboard,
PIR
(movement)
sensor,
Keyboard
lock,
extra
relays
and
so
on.
The
ports
are
not
potential
free,
that
means
you
will
need
external
relays
if
you
need
to
prevent
e.g.
ground
loops.
When
used
as
output
they
are
active
low
(when
the
software
says
activated
the
pin
are
tied
to
GND
thru
a
FET
transistor
also
called
open
drain/collector
function).
You
can
draw
up
to
24VDC/500mA
When
used
as
input
the
voltage
has
to
be
below
1
Volt
DC
to
be
accepted
as
LOW,
and
above
4
VDC
(but
below
24
VDC)
to
be
accepted
as
high.
The
inputs
are
default
high
and
need
to
be
connected
to
ground
in
order
to
change
its
state,
LAN
The
network
connector
is
for
connecting
the
system
to
the
local
area
network.
There
are
two
LED’s
on
the
connector.
They
have
the
following
meaning:
Color:
Off
On
Blink
Yellow
No
Link
Link
Activity
Green
10Mbit
100Mbit
Default
IP
settings
is:
IP
address:
192.168.254.253
Subnet:
255.255.255.0
10/100Mbit:
Auto
DHCP:
Disabled
Summary of Contents for Alfa
Page 1: ......
