Moxa Technologies EDS-208 series User manual

Moxa EtherDevice Switch

EDS-208 Series Hardware Installation Guide

Second Edition, June 2008

Reproduction without permission is prohibited.

P/N: 1802002080000

- 2 -

Overview

The EDS-208 series of Moxa EtherDevice™ Switches are entry-level 8-port

Ethernet Switches that provide a cost-effective solution for industrial Ethernet

connections. EDS-208 provides a choice of 12 to 45 VDC power input or 18 to

30 VAC. The switches can operate reliably in a temperature range of -10 to

60°C, and the rugged hardware design makes EDS-208 perfect for ensuring

that your Ethernet equipment can be used in demanding industrial

environments.

Package Checklist

Moxa EDS-208 is shipped with the following items. If any of these items is

missing or damaged, please contact your customer service representative for

assistance.

y1 EDS-208 or EDS-208-M-SC or EDS-208-M-ST

yHardware Installation Guide

yMoxa Product Warranty booklet

Features

High Performance Network Switching Technology

y10/100BaseT(X) (RJ45), 100BaseFX (SC/ST type, Multi mode)

yIEEE 802.3/802.3u/802.3x

yStore and Forward switching process type, 1024 address entries

Industrial Design

yOperating temperature ranges from -10 to 60°C

yPower inputs: 12 to 45 VDC or 18 to 30 VAC at 47 to 63 Hz

yIP30, plastic case

yDIN-Rail mounting ability

- 3 -

Panel Layout of EDS-208

Rear View

Front View

100

Top View

24 VDC/VAC

V+

V-

1. Heat dissipation orifices

2. Terminal block for power input

and grounding

3. Moxa Logo

4. Power input LED

5. 10/100BaseT(X) Port

6. TP port’s 100 Mbps LED

7. TP port’s 10 Mbps LED

8. DIN-Rail kit

- 4 -

Panel Layout of EDS-208-M-SC/ST

Rear View

Front View

Top View

24 VDC/VAC

V+

V-

100

100M

1. Heat dissipation orifices

2. Terminal block for power input

and grounding

3. Moxa Logo

4. Power input LED

5. 10/100BaseT(X) Port

6. TP port’s 100 Mbps LED

7. TP port’s 10 Mbps LED

8. FX port’s 100 Mbps LED

9. 100BaseFX Port

10. DIN-Rail kit

- 5 -

Mounting Dimensions (unit = mm)

40.03

Front View

EDS-208 EDS-208-M-SC/ST

Side View Rear View Top View

40.03

86.5

74 15 15

100

15.6

10.5

76.2

100

100M

24 VDC/VAC

V+

V-

DIN-Rail Mounting

The plastic DIN-Rail attachment plate should already be fixed to the rear panel

of EDS-208 when you take it out of the box. If you need to reattach the

DIN-Rail attachment plate to EDS-208, make sure the DIN-Rail kit is situated

towards the top, as shown in the figures below.

STEP 1:

Insert the top of the DIN-Rail into

the slot.

STEP 2:

The DIN-Rail attachment unit will

snap into place as shown below.

DIN-Rail

To remove Moxa EDS-208 from the

DIN-Rail, insert a flat-blade screw driver

horizontally into the DIN-Rail kit under

the EDS-208, and then pull it upwards

and release EDS-208 towards you away

from the DIN-Rail.

- 6 -

Wiring Requirements

ATTENTION

Safety First!

Be sure to disconnect the power cord before installing and/or

wiring your EDS-208.

Calculate the maximum possible current in each power wire and

common wire. Observe all electrical codes dictating the

maximum current allowable for each wire size.

If the current goes above the maximum ratings, the wiring could

overheat, causing serious damage to your equipment.

You should also pay attention to the following items:

yUse separate paths to route wiring for power and devices. If power wiring

and device wiring paths must cross, make sure the wires are perpendicular

at the intersection point.

yNOTE: Do not run signal or communications wiring and power wiring in

the same wire conduit. To avoid interference, wires with different signal

characteristics should be routed separately.

yYou can use the type of signal transmitted through a wire to determine

which wires should be kept separate. The rule of thumb is that wiring that

shares similar electrical characteristics can be bundled together.

yKeep input wiring and output wiring separated.

yIt is strongly advised that you label wiring to all devices in the system when

necessary.

Grounding EDS-208

Grounding and wire routing help limit the effects

of noise due to electromagnetic interference

(EMI). Run the ground connection from the right

most contact of the 3-contact terminal block to

the grounding surface prior to connecting

devices.

ATTENTION

This product is intended to be mounted to a well-grounded

mounting surface such as a metal panel.

- 7 -

Wiring the Power Inputs

The two left-most contacts of the 3-contact terminal block connector on

EDS-208’s top panel are used for both the DC and AC inputs of EDS-208. Top

and front views of one of the terminal block connectors are shown here.

STEP 1: Insert the negative/positive DC or AC

wires into the V-/V+ terminals.

STEP 2: To keep the DC or AC wires from

pulling loose, use a small flat-blade screwdriver

to tighten the wire-clamp screws on the front of

the terminal block connector.

STEP 3: Insert the plastic terminal block

connector prongs into the terminal block receptor,

which is located on EDS’s top panel.

ATTENTION

yOnly connect to a class 2 power supply.

yUse 60/75°C copper (CU) wire 28-12 AWG only.

yUse a maximum torque of 4.5 in-lb.

Communication Connections

EDS-208 has 7 or 8 10/100BaseT(X) Ethernet ports, and 1 or 0 (zero)

100BaseFX (SC/ST-type connector) multi-mode fiber ports.

10/100BaseT(X) Ethernet Port Connection

The 10/100BaseT(X) ports located on EDS-208’s front panel are used to

connect to Ethernet-enabled devices.

Below we show pinouts for both MDI (NIC-type) ports and MDI-X

(HUB/Switch-type) ports, and also show cable wiring diagrams for

straight-through and cross-over Ethernet cables.

RJ45 (8-pin, MDI) Port Pinouts RJ45 (8-pin, MDI-X) Port Pinouts

RJ45 (8-pin) to RJ45 (8-pin) Straight-Through Cable Wiring

- 8 -

RJ45 (8-pin) to RJ45 (8-pin) Cross-Over Cable Wiring

100BaseFX Ethernet Port Connection

The concept behind the SC/ST port and cable is quite straightforward. Suppose

you are connecting devices I and II. Contrary to electrical signals, optical

signals do not require a circuit in order to transmit data. Consequently, one of

the optical lines is used to transmit data from device I to device II, and the

other optical line is used to transmit data from device II to device I, for

full-duplex transmission.

All you need to remember is to connect the Tx (transmit) port of device I to the

Rx (receive) port of device II, and the Rx (receive) port of device I to the Tx

(transmit) port of device II. If you make your own cable, we suggest labeling

the two sides of the same line with the same letter (A-to-A and B-to-B, as

shown below, or A1-to-A2 and B1-to-B2).

SC-Port Pinouts SC-Port to SC-Port Cable Wiring

Cable Wiring

A A

B B

ST-Port Pinouts ST-Port to ST-Port Cable Wiring

Cable Wiring

A A

B B

ATTENTION

This is a Class 1 Laser/LED product. To avoid causing serious

damage to your eyes, do not stare directly into the Laser Beam.

- 9 -

LED Indicators

The front panel of EDS-208 contains several LED indicators. The function of

each LED is described in the table below.

LED Color State Description

On Power is being supplied to the

power input

P AMBER Off Power is not being supplied to

the power input

On TP port’s 10 Mbps link is active

Blinking Data is being transmitted at 10

Mbps

(TP) GREEN

Off TP Port’s 10 Mbps link is

inactive

On TP port’s 100 Mbps link is active

Blinking Data is being transmitted at 100

Mbps

100

(TP) GREEN

Off 100BaseTX Port’s link is inactive

On FX port’s 100 Mbps link is active

Blinking Data is being transmitted at 100

Mbps

100M

(FX) GREEN

Off 100BaseFX Port’s link is inactive

Auto MDI/MDI-X Connection

The Auto MDI/MDI-X function allows users to connect EDS-208’s

10/100BaseTX ports to any kind of Ethernet device, regardless of how the

Ethernet cable is wired. This means that you can use either a straight-through

cable or cross-over cable to connect EDS-208 to Ethernet devices.

Dual Speed Functionality and

Switching

EDS208’s 10/100 Mbps switched RJ45 port auto negotiates with the connected

device for the fastest data transmission rate supported by both devices. All

models of EDS-208 are plug-and-play devices, so that software configuration

is not required at installation, or during maintenance. The half/full duplex

mode for the switched RJ45 ports is user dependent and changes (by

auto-negotiation) to full or half duplex, depending on which transmission speed

is supported by the attached device.

- 10 -

Switching, Filtering, and Forwarding

Each time a packet arrives at one of the switched ports, a decision is made

either to filter or to forward the packet. Packets with source and destination

addresses belonging to the same port segment will be filtered, constraining

those packets to one port, and relieving the rest of the network from the need to

process them. A packet with destination address on another port segment will

be forwarded to the appropriate port, and will not be sent to the other ports

where it is not needed. Packets that are used in maintaining the operation of the

network (such as the occasional multi-cast packet) are forwarded to all ports.

EDS-208 operates in the store-and-forward switching mode, which eliminates

bad packets and enables peak performance to be achieved when there is heavy

traffic on the network.

Switching and Address Learning

EDS-208 has an address table that can hold up to 1,000 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-208 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

All of EDS-208’s RJ45 Ethernet ports independently support auto-negotiation

for speeds in the 10BaseT and 100BaseTX modes, with operation according to

the IEEE 802.3u standard. This means that some nodes could be operating at

10 Mbps, while at the same time, other nodes are operating at 100 Mbps.

Auto-negotiation takes place when a “live” RJ45 cable is connected to the

switch, and then each time a LINK is enabled. EDS-208 advertises its

capability for using either 10 Mbps or 100 Mbps transmission speeds, with the

device at the other end of the cable expected to similarly advertise. Depending

on what type of device is connected, this will result in agreement to operate at a

speed of either 10 Mbps or 100 Mbps.

If an EDS-208 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 IEEE

802.3u standard.

Specifications

Technology

Standards IEEE802.3, 802.3u, 802.3x

Processing Type Store and Forward, with IEEE802.3x full duplex,

non-blocking flow control

Address Table Size 1,000 uni-cast addresses

Interface

RJ45 Ports 10/100BaseT(X) auto negotiation speed, F/H

duplex mode, and auto MDI/MDI-X connection

Fiber Ports 100BaseFX ports (SC/ST connector)

LED Indicators Power, 10/100 M (TP port), 100 M (FX port)

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