Advantech EKI-1222 User manual

User Manual
EKI-122X Series
1/2/4-port Modbus Gateway

EKI-122X Series User Manual ii
Copyright
The documentation and the software included with this product are copyrighted 2016
by Advantech Co., Ltd. All rights are reserved. Advantech Co., Ltd. reserves the right
to make improvements in the products described in this manual at any time without
notice. No part of this manual may be reproduced, copied, translated or transmitted
in any form or by any means without the prior written permission of Advantech Co.,
Ltd. Information provided in this manual is intended to be accurate and reliable. How-
ever, Advantech Co., Ltd. assumes no responsibility for its use, nor for any infringe-
ments of the rights of third parties, which may result from its use.
Acknowledgements
Intel and Pentium are trademarks of Intel Corporation.
Microsoft Windows and MS-DOS are registered trademarks of Microsoft Corp.
All other product names or trademarks are properties of their respective owners.
Product Warranty (5 years)
Advantech warrants to you, the original purchaser, that each of its products will be
free from defects in materials and workmanship for five years from the date of pur-
chase.
This warranty does not apply to any products which have been repaired or altered by
persons other than repair personnel authorized by Advantech, or which have been
subject to misuse, abuse, accident or improper installation. Advantech assumes no
liability under the terms of this warranty as a consequence of such events.
Because of Advantech’s high quality-control standards and rigorous testing, most of
our customers never need to use our repair service. If an Advantech product is defec-
tive, it will be repaired or replaced at no charge during the warranty period. For out of-
warranty repairs, you will be billed according to the cost of replacement materials,
service time and freight. Please consult your dealer for more details.
If you think you have a defective product, follow these steps:
1. Collect all the information about the problem encountered. (For example, CPU
speed, Advantech products used, other hardware and software used, etc.) Note
anything abnormal and list any on screen messages you get when the problem
occurs.
2. Call your dealer and describe the problem. Please have your manual, product,
and any helpful information readily available.
3. If your product is diagnosed as defective, obtain an RMA (return merchandize
authorization) number from your dealer. This allows us to process your return
more quickly.
4. Carefully pack the defective product, a fully-completed Repair and Replacement
Order Card and a photocopy proof of purchase date (such as your sales receipt)
in a shippable container. A product returned without proof of the purchase date
is not eligible for warranty service.
5. Write the RMA number visibly on the outside of the package and ship it prepaid
to your dealer.
Part No. 2009122101 Edition 1
Printed in Taiwan October 2016

iii EKI-122X Series User Manual
Declaration of Conformity
CE
This product has passed the CE test for environmental specifications when shielded
cables are used for external wiring. We recommend the use of shielded cables. This
kind of cable is available from Advantech. Please contact your local supplier for
ordering information.
This product has passed the CE test for environmental specifications. Test conditions
for passing included the equipment being operated within an industrial enclosure. In
order to protect the product from being damaged by ESD (Electrostatic Discharge)
and EMI leakage, we strongly recommend the use of CE-compliant industrial enclo-
sure products.
FCC Class A
Note: This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Opera-
tion of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own expense.
Technical Support and Assistance
1. Visit the Advantech web site at www.advantech.com/support where you can find
the latest information about the product.
2. Contact your distributor, sales representative, or Advantech's customer service
center for technical support if you need additional assistance. Please have the
following information ready before you call:
–Product name and serial number
–Description of your peripheral attachments
–Description of your software (operating system, version, application software,
etc.)
–A complete description of the problem
–The exact wording of any error messages

EKI-122X Series User Manual iv
Warnings, Cautions and Notes
Document Feedback
To assist us in making improvements to this manual, we would welcome comments
and constructive criticism. Please send all such - in writing to: support@advan-
tech.com
Packing List
Before setting up the system, check that the items listed below are included and in
good condition. If any item does not accord with the table, please contact your dealer
immediately.
1 x EKI-1221 or EKI-1222 or EKI-1224 Modbus Gateway
1 x Terminal Block
1 x Document and software CD
2 x Wall/panel mount kit
Safety Instructions
1. Read these safety instructions carefully.
2. Keep this User Manual for later reference.
3. Disconnect this equipment from any AC outlet before cleaning. Use a damp
cloth. Do not use liquid or spray detergents for cleaning.
4. For plug-in equipment, the power outlet socket must be located near the equip-
ment and must be easily accessible.
5. Keep this equipment away from humidity.
6. Put this equipment on a reliable surface during installation. Dropping it or letting
it fall may cause damage.
Warning! Warnings indicate conditions, which if not observed, can cause personal
injury!
Caution! Cautions are included to help you avoid damaging hardware or losing
data. e.g.
There is a danger of a new battery exploding if it is incorrectly installed.
Do not attempt to recharge, force open, or heat the battery. Replace the
battery only with the same or equivalent type recommended by the man-
ufacturer. Discard used batteries according to the manufacturer's
instructions.
Note! Notes provide optional additional information.

v EKI-122X Series User Manual
7. The openings on the enclosure are for air convection. Protect the equipment
from overheating. DO NOT COVER THE OPENINGS.
8. Make sure the voltage of the power source is correct before connecting the
equipment to the power outlet.
9. Position the power cord so that people cannot step on it. Do not place anything
over the power cord.
10. All cautions and warnings on the equipment should be noted.
11. If the equipment is not used for a long time, disconnect it from the power source
to avoid damage by transient overvoltage.
12. Never pour any liquid into an opening. This may cause fire or electrical shock.
13. Never open the equipment. For safety reasons, the equipment should be
opened only by qualified service personnel.
14. If one of the following situations arises, get the equipment checked by service
personnel:
15. The power cord or plug is damaged.
16. Liquid has penetrated into the equipment.
17. The equipment has been exposed to moisture.
18. The equipment does not work well, or you cannot get it to work according to the
user's manual.
19. The equipment has been dropped and damaged.
20. The equipment has obvious signs of breakage.
21. DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT WHERE THE
STORAGE TEMPERATURE MAY GO BELOW -40°C (-40°F) OR ABOVE 75°C
(167°F). THIS COULD DAMAGE THE EQUIPMENT. THE EQUIPMENT
SHOULD BE IN A CONTROLLED ENVIRONMENT.
22. CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY
REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE
RECOMMENDED BY THE MANUFACTURER, DISCARD USED BATTERIES
ACCORDING TO THE MANUFACTURER'S INSTRUCTIONS.
Safety Precaution - Static Electricity
Follow these simple precautions to protect yourself from harm and the products from
damage.
To avoid electrical shock, always disconnect the power from your PC chassis
before you work on it. Don't touch any components on the CPU card or other
cards while the PC is on.
Disconnect power before making any configuration changes. The sudden rush
of power as you connect a jumper or install a card may damage sensitive elec-
tronic components.

EKI-122X Series User Manual vi
Contents
Chapter 1 Introduction.........................................1
1.1 Overview................................................................................................... 2
1.2 Device Features........................................................................................ 2
Chapter 2 Getting Started....................................3
2.1 Understanding Modbus Gateways............................................................ 4
2.1.1 Protocol Overview......................................................................... 4
Figure 2.1 Modbus System Architecture 1 ................................ 5
Figure 2.2 Modbus System Architecture 2 ................................ 5
2.1.2 Modbus RTU................................................................................. 5
2.1.3 Modbus ASCII............................................................................... 5
2.1.4 Modbus ASCII............................................................................... 6
2.2 Specifications............................................................................................ 6
2.3 Hardware .................................................................................................. 8
2.3.1 Front View..................................................................................... 8
Figure 2.3 Front View ................................................................ 8
Figure 2.4 Front View ................................................................ 9
Figure 2.5 Front View .............................................................. 10
2.3.2 Rear View................................................................................... 11
Figure 2.6 Rear View............................................................... 11
Figure 2.7 Rear View............................................................... 12
2.3.3 Top View..................................................................................... 12
Figure 2.8 Top View ................................................................ 12
2.3.4 LED Indicators............................................................................ 13
Figure 2.9 System LED Panel................................................. 13
2.3.5 Dimensions................................................................................. 14
Figure 2.10 EKI-1221 and EKI-1222 Dimensions...................... 14
Figure 2.11 EKI-1224 Dimensions............................................. 15
2.4 Connecting Hardware ............................................................................. 16
2.4.1 Choosing a Location................................................................... 16
Figure 2.12 Installing the DIN-Rail Mounting Kit........................ 16
Figure 2.13 Removing the DIN-Rail........................................... 17
Figure 2.14 Installing Wall Mount Plates................................... 18
Figure 2.15 Wall Mounting Screw Dimensions.......................... 19
Figure 2.16 Wall Mount Installation........................................... 19
2.4.2 Serial Connection ....................................................................... 20
Figure 2.17 DB9 Pin Assignment .............................................. 20
2.4.3 Power Connection ...................................................................... 20
Figure 2.18 Power Wiring for EKI-122X Series......................... 21
Chapter 3 Configuration ....................................22
3.1 Configuration Utility Overview................................................................. 23
3.2 Installing the Configuration Utility............................................................ 23
Figure 3.1 InstallShield Wizard 1 of 4...................................... 24
Figure 3.2 InstallShield Wizard 2 of 4...................................... 24
Figure 3.3 InstallShield Wizard 3 of 4...................................... 25
Figure 3.4 InstallShield Wizard 4 of 4...................................... 25
3.3 Menu Bar ................................................................................................ 26
Figure 3.5 Configuration Utility Overview................................ 26
3.4 Quick Tool Bar........................................................................................ 27
3.4.1 Utility Settings............................................................................. 28

vii EKI-122X Series User Manual
Figure 3.7 View > Settings > Main Form Setting.....................28
Figure 3.8 View > Settings > Device Manager ........................29
3.4.2 Discovering Your Device Server.................................................30
Figure 3.9 Open View of Serial Device Configuration Utility....30
Figure 3.10 Selecting a Group...................................................31
Figure 3.11 Selecting a Device..................................................31
Figure 3.12 Viewing Basic Settings...........................................31
3.4.3 Network Settings.........................................................................32
Figure 3.13 Utility Overview.......................................................32
Figure 3.14 Network Settings Overview ....................................33
Figure 3.15 Reset Device..........................................................34
3.5 Administrator Settings.............................................................................35
3.5.1 Locate the Serial Device Server .................................................35
Figure 3.16 Locate the Serial Device Server.............................35
3.5.2 Securing the Serial Device Server..............................................36
Figure 3.17 Lock the Serial Device Server................................36
Figure 3.18 Enter a Password...................................................37
Figure 3.19 Reset Device..........................................................37
Figure 3.20 Unlock the Serial Device Server.............................38
3.5.3 Restore to Factory Default Settings............................................39
Figure 3.21 Restore to Factory Default Settings........................39
3.5.4 Resetting the Device...................................................................39
Figure 3.22 Reset Device..........................................................40
3.5.5 Add to Favorite............................................................................41
Figure 3.23 Add to Favorite.......................................................41
3.5.6 Update Firmware ........................................................................41
Figure 3.24 Update Firmware....................................................42
Chapter 4 Web Interface.....................................43
4.1 Overview.................................................................................................44
4.2 Accessing the Web Page........................................................................44
4.2.1 Accessing the Web Page via Configuration Utility......................44
Figure 4.1 Accessing the Web Page via Configuration Utility..44
4.2.2 Accessing the Web Page via Web Browser................................45
4.3 System ....................................................................................................45
Figure 4.2 Setting Time Zone..................................................45
4.4 Ethernet Configuration............................................................................46
Figure 4.3 Ethernet Configuration............................................46
4.5 Port Configuration...................................................................................47
4.5.1 Basic...........................................................................................47
Figure 4.4 Port Configuration > Basic......................................47
4.5.2 Operation....................................................................................48
Figure 4.5 Master Mode...........................................................48
Figure 4.6 Slave Mode.............................................................48
Figure 4.7 Port Configuration > Operation...............................49
Figure 4.8 Port Configuration > Operation...............................49
4.6 Monitor....................................................................................................50
4.6.1 Setting.........................................................................................50
Figure 4.9 Monitor > Setting ....................................................50
4.6.2 Statistic .......................................................................................51
4.6.3 Connected IP..............................................................................52
4.7 Auto Warning (Alarm)..............................................................................52
4.7.1 Setting.........................................................................................52
Figure 4.12 Alarm > Setting.......................................................53
4.7.2 Event...........................................................................................54
Figure 4.13 Alarm > Event.........................................................54
4.8 Syslogd ...................................................................................................55
4.8.1 Syslogd Setting...........................................................................55

EKI-122X Series User Manual viii
Figure 4.14 Syslogd > Syslogd Setting ..................................... 55
4.8.2 Syslogd Message ....................................................................... 55
Figure 4.15 Syslogd > Syslogd Message.................................. 55
4.8.3 Modbus IP Mapping.................................................................... 55
Figure 4.16 Syslogd > Modbus IP Mapping .............................. 55
4.8.4 Modbus Port Mapping................................................................. 56
Figure 4.17 Syslogd > Modbus Port Mapping ........................... 56
4.9 Tools....................................................................................................... 56
4.9.1 Ping............................................................................................. 56
Figure 4.18 Tools > Ping........................................................... 56
4.9.2 Reboot........................................................................................ 57
Figure 4.19 Tools > Reboot....................................................... 57
4.10 Management........................................................................................... 57
4.10.1 Log File....................................................................................... 57
4.10.2 Change Password ...................................................................... 58
Figure 4.21 Management > Change Password......................... 58
4.10.3 Export Device Settings ............................................................... 58
Figure 4.22 Management > Export............................................ 58
4.10.4 Import Device Settings................................................................ 58
Figure 4.23 Management > Import............................................ 58

Chapter 1
1Introduction

EKI-122X Series User Manual 2
1.1 Overview
Advantech’s EKI-1221/EKI-1222/EKI-1224 series of Modbus Gateways (the following
manual will use EKI-122X series instead of complete model name) are a robust, fea-
ture-rich, and cost effective way to integrate Ethernet and Serial Modbus devices.
The EKI-122X series provides one, two or four serial ports, two Ethernet ports, a wide
range of power inputs, and a compact slim design, making them an ideal solution for
connecting multiple Modbus/ RTU and Modbus/ASCII serial devices to Modbus TCP
(Ethernet).
Originally developed for PLCs in industrial automation and manufacturing control
applications, Modbus is one of the most popular open standard protocols in use
today. The communication mode can be Modbus RTU/ASCII (Serial) or Modbus TCP
(Ethernet). Many industrial devices use Modbus as their communication standard.
However, the Ethernet-based Modbus protocol is different from the original serial-
based protocols that a Modbus Gateway is needed to be a bridge for integration.
The two Ethernet ports allow the EKI-122X series to establish two separated
Ethernet connections to two Ethernet domains or two Ethernet switches in the same
domain. Through a dual Ethernet connection, the EKI-122X series greatly improves
the device connectivity reliability, increase system stability, and simplify the
redundant configuration.
The Modbus/RTU and Modbus/ASCII protocols define how a “master” device polls
one or more “slave” devices and write real-time data over RS-232, RS-422, or RS-
485 serial data communication. The EKI-122X series provides a feature that can
allow users to select master or slave operation for each serial port. The EKI-122X
series not only allows Ethernet master can control serial slaves, but also allow serial
masters to control Ethernet or serial slaves. Furthermore, the EKI-122X series can
allow both Ethernet and serial slaves to be controlled by both Ethernet and serial
masters.
The EKI-122X series supports various operating modes: RTU Master, RTU Slave,
ASCII Master, and ASCII Slave.
1.2 Device Features
Provides 2 x 10/100 Mbps Ethernet ports for LAN redundancy
Integration of Modbus TCP and Modbus RTU/ASCII networks
Supports up to 921.6 kbps, and any baud rate setting
Supports up to 16 connections and 32 requests simultaneously
Auto searching slave ID over configuration utility
Software selectable RS-232/422/485 communication
Mounts on DIN-rail and Wall mount
Built-in 15 KV ESD protection for all serial signals
Automatic RS-485 data flow control
Supports surge protection for D.C. power ports with line to line 2 KV, and line to
earth 4 KV; for signal ports with 4 KV.
'I' models support a wide operating temperature
'CI' models support isolation and wide operating temperature

Chapter 2
2Getting Started

EKI-122X Series User Manual 4
2.1 Understanding Modbus Gateways
Networks have become increasingly vital for industrial automation applications. Many
control devices today do not have a network port and can only communicate with a
dedicated local PC or control panel. Advantech’s revolutionary network-enabling
technology is now allowing control devices with serial ports to connect to the Ethernet
and share networks quickly and cost-effectively. The EKI-122X Series are network-
based, Modbus gateways for integrating new and existing Mo bus/RTU and Modbus/
ASCII serial devices to newer TCP/IP networked-based devices. Manufacturers, sys-
tem integrators, and end users can now take advantage of Modbus gateways to cre-
ate networked applications for remote managing and accessing data for their control
devices that wasn’t possible before.
2.1.1 Protocol Overview
Originally developed for PLCs in industrial automation and manufacturing control
application, Modbus has become one of the most popular open standard protocols in
use today. When it comes to planning data communication for open, multi-vendor
industrial control systems, Modbus is the first choice of end-users and integrators.
Although it’s not the most powerful protocol available, its rare simplicity allows not
only rapid implementation, but also remains flexible enough to be applied in virtually
all industrial situations. The communication mode of Modbus can be ASCII, RTU, or
TCP/IP. Modbus gateways are used to support applications such as protocol conver-
sion between serial (Modbus/ASCII or Modbus/RTU) and networked (Modbus/TCP)
Modbus devices or it can be used to bridge Modbus serial devices over TCP/IP net-
work.
The Modbus/RTU and Modbus/ASCII protocols define how a “master” device polls
one or more “slave” devices to read and write real-time data over RS-232, RS-422, or
RS-485 serial data communication. The simplicity of Modbus/RTU not only allows
rapid implementation, but can also remain flexible enough to be applied in virtually all
industrial situations.
During Modbus network communication, the protocol determines how each controller
will know its device address, recognize a message addressed to it, determine the
kind of action to be taken, and extract any data or other information contained in the
message. If a reply is required, the controller will construct the reply message and
send it back using Modbus protocol.
The way controllers communicate with each other is by using a master-slave tech-
nique, in which only one device (the master) can initiate queries. The other devices
(the slaves) respond by supplying the requested data to the master, or by taking the
action requested in the query. Typical master devices include host processors and
programming panels. Typical slaves include programmable controllers.
It is the master that can address individual slaves and initiate a broadcast message
to all slaves. On the other hand, slaves return a response to queries that are
addressed to them individually. Responses are not returned to broadcast queries
from the master.
The Modbus protocol has a definite format for the master’s query, which incorporates
the device (or broadcast) address, a function code defining the requested action, any
data to be sent, and an error-checking field. The slave’s response message, which is
also constructed using Modbus protocol, contains fields confirming the action taken,
any data to be returned, and an error-checking field. If an error occurred in receipt of
the message, or if the slave is unable to perform the requested action, the slave will
construct an error message and send it as its response.

5 EKI-122X Series User Manual
The basic system architecture is as below:
Figure 2.1 Modbus System Architecture 1
Figure 2.2 Modbus System Architecture 2
2.1.2 Modbus RTU
The Modbus/RTU protocol defines how a “master” device polls one or more “slave”
devices to read and write data in real-time over RS-232, RS-422, or RS-485 serial
data communication.
When using RTU mode, each 8-bit byte in a message contains two 4-bit hexadecimal
characters. The main advantage of this mode is that its greater character density
allows better data throughput than ASCII mode for the same baud rate. Neverthe-
less, each message must be transmitted in continuous stream.
2.1.3 Modbus ASCII
When using ASCII mode, each 8-bit byte in a message is sent as two ACSII charac-
ters. The primary advantage of this ASCII mode is that it allows time intervals of up to
one second to occur between characters without causing an error.
PWR2
P-Fail
DC12-48VDC12-48V
PWR1
V2-V2+V1-V1+
1A@24V
1
2
1
2
P1P2Status
Default
EKI-1222
Tx
Rx
Tx
Rx
SerialPorts
PWR2
P-Fail
DC12-48V DC12-48V
PWR1
V2-V2+V1-V1+
1A@24V
1
2
1
Default
LAN
SerialPorts
SerialPorts
P1P2Status
EKI-1221
Tx
Rx
Ethernet 1
Ethernet 2
1
2
RS232
(Modbus / Ascll)
(Modbus / RTU)
(Modbus / Ascll) RS485
(Modbus / RTU) RS485
R
/ Asc
RTU
R
(Modbu
us /
(Mo
(
dbu
u
s /
PC
Host (PC)
EKI 1222
EKI 1221
PLC
Modbus / TCP
Master Device
o
RTU)
485
RS485
U) RS4
A
(Mo
(
(Mo
(M
Asc
Ascll)
(Modbus / A
/
A
A
PWR2
P-Fail
DC12-48V DC12-48V
PWR1
V2-V2+
V1-V1+
1A@24V
1
2
13
24
P1P2Status
Default
LAN
SerialPorts
EKI-1224
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Ethernet 1
RS232/422/485
Ethernet 2
Mode RTU ASCII
Coding System 8-bit binary.
Two hexadecimal character co
tained in each ASCII character of
the message
Hexadecimal.
One hexadecimal character co
tained in each ASCII character of
the message
Bits per Byte 1 start bit,
8 data bits,
1 bit for even/odd parity; no bit for
parity
1 stop bit if parity is used;
2 bits if no parity
1 start bit ,
7 data bits,
1 bit for even/odd parity; no bit for
parity
1 stop bit if parity is used;
2 bits if no parity
Error Check CRC LRC

EKI-122X Series User Manual 6
2.1.4 Modbus ASCII
As a new extension of Modbus/RTU, the Modbus/TCP protocol defines how Modbus/
RTU messages are encoded within and transported over TCP/IP-based networks.
Modbus/TCP is just as simple to implement and flexible to apply as the original Mod-
bus/RTU. The Modbus/TCP protocol is defined by its form of encapsulation for a
Modbus request or response. That means the Modbus request or response data is
encapsulated in TCP frame that has a six-byte header in Modbus/TCP protocol.
Modbus/TCP enables the use of Modbus messaging in an Intranet running the TCP/
IP protocols. Modbus/TCP is most commonly used for Ethernet attachment of PLC’s
or I/O modules to other simple field buses or I/O networks.
2.2 Specifications
Specifications Description
Interface I/O Port EKI-1221: 2 x RJ45 + 1 x RS-232/422/485
EKI-1221I: 2 x RJ45 + 1 x RS-232/422/485
EKI-1221CI: 2 x RJ45 + 1 x RS-422/485
EKI-1222: 2 x RJ45 + 2 x RS-232/422/485
EKI-1222I: 2 x RJ45 + 2 x RS-232/422/485
EKI-1222CI: 2 x RJ45 + 2 x RS-422/485
EKI-1224: 2 x RJ45 + 4 x RS-232/422/485
EKI-1224I: 2 x RJ45 + 4 x RS-232/422/485
EKI-1224CI: 2 x RJ45 + 4 x RS-422/485
Power Connector Terminal block
Physical Enclosure Metal with solid mounting hardware
Installation DIN-Rail and Wall mount
Dimensions
(W x H x D) EKI-1221/1222: 37 x 140 x 95mm (1.46" x 5.51" x 3.74")
EKI-1224: 55 x 140 x 95mm (2.17" x 5.51" x 3.74")
LED Display System LED Power 1, Power 2, Status
Port LED LAN: Speed, Link/Active
Serial: Tx, Rx
Environment Operating
Temperature EKI-1221/EKI-1222/EKI-1224: -10°C ~ 60°C (14°F ~ 140°F)
‘CI’ & ‘I’ models: -40°C ~ 70°C (-40°F ~ 158°F)
Storage
Temperature -20°C ~ 80°C (-4°F ~ 176°F)
Ambient Relative
Humidity 5 ~ 95% RH
Ethernet
Communications Compatibility IEEE 802.3, IEEE 802.3u
Speed 10/100 Mbps
Port Connector 8-pin RJ45
Protection Built-in 1.5 KV magnetic isolation

7 EKI-122X Series User Manual
Serial
Communications Port Type RS-232/422/485, software selectable
Port Connector DB9 male
Data Bits 7, 8
Stop Bits 1, 2
Parity None, Odd, Even, Space, Mark
Flow Control XON/XOFF, RTS/CTS, DTR/DSR
Baud Rate 50 bps ~ 921.6 kbps, any baud rate setting
Protection Built-in 15 KV ESD for all signals
'CI' models: 2KV Isolation for RS-422/485 signals
Power Power
Consumption EKI-1221: 5.2W
EKI-1222: 5.2W
EKI-1224: 6.3W
Power Input 12 ~ 48VDC, redundant dual inputs
Software OS Support 32-bit/64-bit Windows XP/Vista/7/8/8.1, Windows
Server 2003/2008/2008 R2/2012/2012 R2, and Linux
Utility Advantech EKI Device Configuation Utility
Operation Modes Modbus RTU Master/Slave mode
Modbus ASCII Master/Slave mode
Configuration Windows utility, Web Browser
Management SNMP MIB-II
Regulatory
Approvals EMC CE, FCC Part 15 Subpart B (Class A)
Specifications Description

EKI-122X Series User Manual 8
2.3 Hardware
2.3.1 Front View
The following view shows the EKI-1221.
Figure 2.3 Front View
No. Item Description
1 System LED panel See “LED Indicators” on page 13 for further details.
2 Default button Press for at least 10 secs. to rest device to default settings.
3 ETH port RJ45 ports x 2
4 Serial port DB9 pinout, supports 232/422/485
1
1
2
Default
LAN
TxRx
P1 P2 Status
Serial ports
EKI-1221
1
2
3
4

9 EKI-122X Series User Manual
The following view shows the EKI-1222.
Figure 2.4 Front View
No. Item Description
1 System LED panel See “LED Indicators” on page 13 for further details.
2 Default button Press for at least 10 secs. to rest device to default settings.
3 ETH port RJ45 ports x 2
4 Serial port DB9 (pinout) ports x 2, supports 232/422/485
1
1
2
Default
LAN
TxRx
TxRx
P1 P2 Status
Serial ports
EKI-1222
1
2
3
4

EKI-122X Series User Manual 10
The following view shows the EKI-1224.
Figure 2.5 Front View
No. Item Description
1 System LED panel See “LED Indicators” on page 13 for further details.
2 Default button Press for at least 10 secs. to rest device to default settings.
3 ETH port RJ45 ports x 2
4 Serial port DB9 (pinout) ports x 4, supports 232/422/485
1
1
2
3
4
2
Default
LAN
TxRx
TxRx
TxRx
TxRx
P1 P2 Status
Serial ports
EKI-1224
1
2
3
4

11 EKI-122X Series User Manual
2.3.2 Rear View
The following view shows the EKI-1221 and EKI-1222.
Figure 2.6 Rear View
No. Item Description
1 DIN-Rail mounting
plate Mounting plate used for the installation to a standard DIN rail
1

EKI-122X Series User Manual 12
The following view shows the EKI-1224.
Figure 2.7 Rear View
2.3.3 Top View
Figure 2.8 Top View
No. Item Description
1 DIN-Rail mounting
plate Mounting plate used for the installation to a standard DIN rail
1
No. Item Description
1 Ground terminal Screw terminal used to ground chassis
2 Terminal block Connect cabling for power and alarm wiring
2 Wall mounting holes Screw holes (top x4, bottom x4) used in the installation of a wall
mounting plate
PWR2
P-Fail
DC12-48V
PWR1
V2- V2+ V1- V1+
1A@24V
1
2
3