- 1 -

Accurate

Rugged

Dependable

ETHERNET I/O NETWORKS

Modbus TCP/IP  •  Modbus UDP/IP  •  Ethernet/IP

- 2 -

Accurate

Rugged

Dependable

How Remote I/O Are Used

PLC

DCS

PC

Sensors

Displays

Relays &Actuators

Network Masters Remote Slaves Field Instrumentation

- 3 -

Accurate

Rugged

Dependable

Data logger Gateway Remote I/O Micro PLC HMI DCS I/O Motion controller Drive

Ethernet Switches Redundant Ring

Ethernet Control & Automation

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Accurate

Rugged

Dependable

There are 2 forms of Redundancy:

Duplicating HARDWARE and/or

Duplicating the MEDIA (Communication) Path

Ethernet should NOT allow simultaneous

MULTIPLE COMMUNICATION PATHS.

Network devices need added INTELLIGENCE to manage

communication over duplicate paths.

A HUB electrically repeats an incoming message to all of

it’s ports simultaneously, boosting and duplicating the

signal in order to add more devices and extend

transmission distance.

A SWITCH learns which devices are connected to each

port and forwards the message to one correct port,

reducing traffic and preserving bandwidth.

Ethernet Redundancy

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Accurate

Rugged

Dependable

A managed switch can DETECT REDUNDANT MESSAGE

PATHS, disable them, and hold them as a backup if the

primary path fails.

With an EtherStax in hub mode, a message is internally repeated

to it’s second port. The redundant switch will sense the two

media paths going to the same IP Address and disable one

preventing multiple message loops.

The methods used by network switches to manage redundant

paths refers to their REDUNDANCY PROTOCOL.

The EtherStax is interoperable with these protocols:

SPANNING TREE (STP), RAPID SPANNING TREE (RSTP)

and most PROPRIETARY RINGS.

Ethernet Redundancy

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Accurate

Rugged

Dependable

Simple Redundancy Connections

For this example, two redundant paths are present, one betweenthe switches, another between a switch and the EtherStax. This connection would also employ an STP or RSTP protocol.

A break in either path to the EtherStax will recover communication to the opposite path in less than 15 seconds with RSTP switches.

A break in either path between network switches will recover communication to the opposite path less than 1-2 seconds.

P1 P2

P3P2

P6P5

P8R.M.

P3

P5

P7

P8

P4

P6

P1

P4

P7

FDX/COL

P1

FDX/COL

EIS-408FX-M

P3P2

P6P5

LNK/ACT P8

RXPWR1

R.M.

EIS-408FX-M

P2

LNK/ACT

RX

P3

P5

P7

P8

RX RESET

TX

P1

P4

P7

TX PWR

PWR2

P4

P6

RX

TX

TX

R.M.

FAULT

FAULT

PWR1

R.M.

RESET

PWR

PWR2

BREAK 2

BREAK 1

HOST PC

BRK 3

STP/RSTPREDUNDANT SWITCHREQUIRED

TO NIC

OR

CONNECT TWOPATHS TO UNIT

I/O 1

RE

DU

ND

AN

T N

ET

WO

RK

ME

DIA

STP/RSTPREDUNDANT SWITCHREQUIRED

BREAK 1 OR BREAK 2 WILL RECOVERCOMMUNICATION IN ABOUT 15 SECONDS.

Acromag

USE AN ETHERNET SWITCHTO DISTRIBUTE NODES

Acromag

BRK 4

REDUNDANT TO NODE

IMPORTANT: THE UNIT MUSTBE IN HUB-MODE PRIOR TOCONNECTING THE SECONDNETWORK PATH TO PREVENTMESSAGE LOOPS FROMDEVELOPING.

IN HUB MODE, THE ETHERSTAXREPEATS ANY MESSAGE ON A PORT AT THE OPPOSITE PORT, TRIGGERINGTHE EXTERNAL SWITCH TO SENSETHE REDUNDANT PATH, DISABLE IT, AND HOLD IT AS A BACKUP PATH SHOULD THE PRIMARY PATH FAIL.

BREAK 3 OR BREAK 4 WILL RECOVERCOMMUNICATION IN 1-2 SECONDS WITH RSTP.

REMOTE HOST(w/ NIC INSTALLED)

SIMPLE NODE REDUNDANCY CONNECTIONS(REDUNDANT BETWEEN SWITCHES AND TO UNIT)

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Accurate

Rugged

Dependable

Proprietary RingRedundancy Connections

Ring switches connect in “circular” fashion using a proprietary protocol. This simply means that one extra link connects the last switch back to the first.

In this Example, an EtherStax unit, in hub mode, is connected directly to the ring, with each port connected to a different network switch.

This method of redundancy gives the fastest recovery time when used with the EtherStax.

A break in any ring segment will recover communications along the opposite path in about300 milliseconds.

P3P2

P6P5

R.M.P8

RX

TX

RX

TX

P1P2

P4P5

P7P8

R.M.

P2P1

P5P4

P8P7

P1

P4

P7

P3

P6

R.M.

P3

P6

R.M.

P1

FDX/COL

LNK/ACT

RX

P2

FAULT

PWR1

R.M.

EIS-408FX-M

P3

P5

P7

P8

P4

P6

RESET

FAULT

PWR2

PWR

P5

P7

P8

P6

RX RESET

FAULT

RXPWR2

R.M.

TX PWR

P3

P5

P7

RX

TX

P8

TX

P4

P6

RESET

PWR2

PWR

P1

FDX/COL

LNK/ACT

Acromag

P2

PWR1

P1

P3

FDX/COL

P2

P4

TX

LNK/ACT

PWR1

EIS-408FX-MEIS-408FX-M

Acromag Acromag

300ms

SWITCH

I/O 1

300ms300ms

HOST PC

THE ETHERSTAX ISTRANSPARENT TO THE RING IN HUBMODE

SWITCH

ACROMAGEIS-408FX-M

DISABLED PATH(SWITCH BLOCKSCOMMUNICATIONVIA REDUNDANTPATH)

300ms

ACROMAGEIS-408FX-M

UNIT MUST BE INHUB/REPEATERMODE

ETHERSTAX UNIT

SWITCH

REDUNDANT MEDIARING CONNECTIONS

IF A PRIMARY PATH FAILS, THENRING WILL FAIL-OVER TO THEALTERNATE PATH IN LESS THAN300 MILLISECONDS.

ACROMAGEIS-408FX-M

- 8 -

Accurate

Rugged

Dependable

Redundant Ring With Wireless Link

Using the proprietary ring

redundancy and radios.

If radios are the primary

path, recovery to wired

link is ≤300ms.

If wired is primary path,

recovery to the radios is

@ 40s or less.

Connecting an EtherStax via an alternate wireless path using redundant ring Switches

TM

TM

P2

P3

P5

P7

P8

RX

TX

TX

P2

P4

P6

P2

FDX/COL

L NK/ACT

RX

P2

P2P3

P5P6

P8

R.M.

FDX/COL

RX

L NK/ACT

P3

P5

P7

P8

RX

TX

TX

P4

P6

P7

P4

P1

PWR

2.4 GHz

P1

P4P3

P7P6

R.M.

RESET

R.M.

FAULT

PWR1

2.4 GHz

EIS-408FX -M

Acromag

P2

P8

P5

PWR2

ETHERNET

RF RE CEIVE

RF TRANSMIT

ETHERNET

SE RIAL

RF TRANSMIT

POWER/STATUS

RESET

PWR2

PWR1

PWR

EIS-408FX -M

RADIOLINXSE RIAL

POWER/STATUS

INDUSTRIAL HOTSPOTSIGNALSTRENGTH

RF RE CEIVE

t <= 90s

FAULT

R.M.

INDUSTRIAL HOTSPOTSIGNALSTRENGTH

RADIOLINX

RADIOMODEM

RADIOMODEM

300ms

t <= 90s

EtherStax I/O

RINGSWITCH

Acromag

RINGSWITCH

300ms

REDUNDANT RING NETWORK w/WIRELESS SEGMENT

HOST PC

Recovery to Copper Link in 300ms.Recovery to Wireless Link in 40-90s.

- 9 -

Accurate

Rugged

Dependable

Ring Redundant Trends

Fault Tolerant Ethernet (FTE) ArchitectureHoneywell Experion Process Knowledge System (PKS) Platform

With Acromag EtherStax Remote I/O

EtherStax at Controller level using Modbus TCP/IP protocol

EtherStax as remote I/O (below Controllers) using Modbus TCP/IP protocol

- 10 -

Accurate

Rugged

Dependable

Network Configuration Page

- 11 -

Accurate

Rugged

Dependable

High Speed Operation – Analog (<8 mSec) & Discrete (<1 mSec)

Analog Integration / Totalizer – Inputs sampled every 8mSec

Digital Counter / Totalizer – Input rate up to 200 Hz

32 Bit Floating Point Configuration – Indicates exact engineering

units that does not require additional scaling

Multiple Modbus Ports – Up to 65,535 ports available

Dual Protocol Communications – Many models communicate with

both Modbus TCP/IP and Ethernet/IP simultaneously

Advanced I/O Features

- 12 -

Accurate

Rugged

Dependable

I/O Test Page

- 13 -

Accurate

Rugged

Dependable

Database Back Office Operations

Plant Network Masters

Remote I/O Slaves Can only talk

to Masters

Simplified Enterprise Diagram

- 14 -

Accurate

Rugged

Dependable

No network master, no HMI software, no special drivers required.Analog messaging based on time with a 1 – 90 second period.

Discrete messaging based on time and/or change-of-state (COS). Combo modules are bi-directional i2o.

i2o Ethernet Peer-to-Peer

- 15 -

Accurate

Rugged

Dependable

Analog i2o Mapping Pages

- 16 -

Accurate

Rugged

Dependable

Digital i2o Mapping Pages

- 17 -

Accurate

Rugged

Dependable

End-user Industries:■ Power Gen & Distribution ■ Chemical & Petro-chem■ Water & wastewater ■ Metals processing■ Oil & Gas Refining ■ Pharmaceutical■ Food, Dairy, Beverage ■ Military & Aerospace

System Integrators:■ SCADA Applications ■ Factory Automation■ Building & Energy Mgmt ■ Specialty Machinery

OEM Machinery:■ Engine & Turbine Controls ■ Switch Gear Equipment■ Packaging Equipment ■ Boilers & Furnaces■ Semiconductor Fab ■ Material Handling

Industries