User Manual

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Switching and Address Learning
The Moxa EDS has an address table that can hold up to 8,000 node
addresses, which makes it suitable for use with large networks. The
address tables are self-learning, so that as nodes are added or
removed, or moved from one segment to another, EDS automatically
keeps up with new node locations. An address-aging algorithm causes
the least-used addresses to be deleted in favor of newer, more
frequently used addresses. To reset the address buffer, power down the
unit and then power it back up.
Auto-Negotiation and Speed Sensing
The EDS’s RJ45 Ethernet ports independently support auto-negotiation
for transmission speeds of 10 Mbps or 100 Mbps, with operation
according to the IEEE802.3 standard. This means that some nodes
could be operating at 10 Mbps, while at the same time, other nodes are
operating at 100 Mbps.
When an RJ45 cable is connected, auto-negotiation takes place, and
then each time a LINK is enabled. The EDS advertises its capability for
using 10 Mbps or 100 Mbps, transmission speeds, with the device at
the other end of the cable expected to advertise similarly. Depending
on what type of device is connected, this will result in agreement to
operate at a speed of 10 Mbps or 100 Mbps.
If an EDS’s RJ45 Ethernet port is connected to a non-negotiating
device, it will default to 10 Mbps speed and half-duplex mode, as
required by the IEEE802.3 standard.
Specifications
Technology
Standards
IEEE 802.3 for 10BaseT,
IEEE 802.3u for 100BaseT(X) and 100Base FX,
IEEE 802.1p for Class of Service
Flow Control
IEEE 802.3x flow control, back pressure flow
control
Interface
RJ45 Ports
10/100BaseT(X) auto negotiation speed
Fiber Ports
100BaseFX ports (SC/ST connector ), only available
for EDS-2008-EL-M-ST/EDS-2008-EL-M-SC models
LED Indicators
PWR, 10M/100M
DIP Switch
QoS, Broadcast Storm Protection (BSP)
Switch Properties
MAC Table Size
8 K
Packet Buffer Size
4 Mbits
Processing Type
Store and Forward
Power
Input Voltage
12-48 VDC inputs
Input Current
(max.)
EDS-2008-EL: 0.15 A
EDS-2008-EL-M-SC/EDS-2008-EL-M-ST: 0.246 A
Connection
Removable 2-contact terminal block for EL Series;
Removable 3-contact terminal block for ELP Series
Overload Current
Protection
Present