BusWorks
®
900EN-S005 Ethernet Switch User’s Manual Ethernet I/O
__________________________________________________________________
_______________________________________________________________________________________
Acromag, Inc. Tel:248-624-1541 Fax:248-624-9234 Email:
http://www.acromag.com
4
X5
X1
X2
34
DC-
33
31
GND
DC+
PORT 5
S1
S2
X3
X4
32
PORT 1
DIP SW S1/S2
CFG OPTIONS
P1
PORT 3
PUSH
TO RESET
DC+
TB3
POWER
PORT 2
PGM
PORT
PORT 4
POWER
3.3/2.5/1.8V
ISOLATED SWITCH PORTS
TRANSFORMER
900EN-S005
ISOLATION
DIAGRAM
This switch has automatic features that allow it to operate “unmanaged”,
right out of the box, and there are no special programming or setup
procedures required.
BASIC (DEFAULT) DEVICE OPERATION
Automatic MDI/MDI-X.
Automatic Polarity.
Automatic Half/Full Duplex.
Automatic 10M/100M.
Automatic Address Learning.
Automatic Address Migration.
Automatic Address Aging using 5 minute period (300±75s).
Flow Controls Enabled.
Half-Duplex Back Pressure Applies.
Standard Half-Duplex Back-Off Applies.
Switch will check that frame length conforms to maximum size limit.
R+Y+G LED’s indicate Speed 100M ON/10M OFF + Full-Duplex ON/
Collision Bl Link ON/Activity Blinking, respectively.
This unit also has advanced features and options that may be selected via
DIP switches, or optionally under program control. These features and
alternate operating modes are explained in the Technical Reference section
at the back of this manual.
ISOLATION
BARRIERS
Dashed Lines denote isolation
barriers.
The switch circuit, the
individual network ports, and
the power circuit are isolated
from each other for safety and
increased noise immunity.
Refer to Specifications section
for isolation ratings.
BASIC OPERATION
