Advantech EKI-1121L User manual

User Manual
EKI-1121L, EKI-1122L,
EKI-1124L
1/2/4-port Programmable Serial
Device Servers

EKI-1121L/1122L/1124L User Manual ii
Copyright
The documentation and the software included with this product are copyrighted 2010
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. However,
Advantech Co., Ltd. assumes no responsibility for its use, nor for any infringements
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 (2 years)
Advantech warrants to you, the original purchaser, that each of its products will be
free from defects in materials and workmanship for two 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 onscreen 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. 2003112200 Edition 1
Printed in Taiwan July 2010

iii EKI-1121L/1122L/1124L User Manual
Declaration of Conformity
CE
The EKI-1121L/1122L/1124L has passed the CE test for environmental specifica-
tions. 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 enclosure products.
Advantech Customer Services
Each and every Advantech product is built to the most exacting specifications to
ensure reliable performance in the unusual and demanding conditions typical of
industrial environments. Whether your new Advantech equipment is destined for the
laboratory or the factory floor, you can be assured that your product will provide the
reliability and ease of operation for which the name Advantech has come to be
known.
Your satisfaction is our number one concern. Here is a guide to Advantech's cus-
tomer services. To ensure you get the full benefit of our services, please follow the
instructions below carefully.
Technical Support and Assistance
1. Visit the Advantech web site at http://support.advantech.com.cn 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-1121L/1122L/1124L User Manual iv
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.
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:
 The power cord or plug is damaged.
 Liquid has penetrated into the equipment.
 The equipment has been exposed to moisture.
 The equipment does not work well, or you cannot get it to work according to
the user's manual.
 The equipment has been dropped and damaged.
 The equipment has obvious signs of breakage.
15. DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT WHERE THE
STORAGE TEMPERATURE MAY GO BELOW -20° C (-4° F) OR ABOVE 60° C
(140° F). THIS COULD DAMAGE THE EQUIPMENT. THE EQUIPMENT
SHOULD BE IN A CONTROLLED ENVIRONMENT.
16. 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.
The sound pressure level at the operator's position according to IEC 704-1:1982 is
no more than 70 dB (A).
DISCLAIMER: This set of instructions is given according to IEC 704-1. Advantech
disclaims all responsibility for the accuracy of any statements contained herein.

v EKI-1121L/1122L/1124L User Manual
Contents
Chapter 1 Introduction..........................................1
1.1 Overview...................................................................................................2
1.2 Features....................................................................................................2
1.3 Specifications............................................................................................2
1.4 Packing List...............................................................................................3
Chapter 2 Getting Started.....................................5
2.1 Understanding the EKI-1121L/1122L/1124L.............................................6
2.2 Hardware...................................................................................................6
2.2.1 LED Indicators ..............................................................................6
Table 2.1: EKI-1121L/1122L/1124L LED Indicators....................6
2.3 Dimensions (Units: mm)............................................................................7
Figure 2.1 Front View of EKI-1121L ............................................7
Figure 2.2 Side View of EKI-1121L..............................................7
Figure 2.3 Back View of EKI-1121L.............................................8
Figure 2.4 Top View of EKI-1121L...............................................8
Figure 2.5 Front View of EKI-1122L ............................................9
Figure 2.6 Side View of EKI-1122L..............................................9
Figure 2.7 Back View of EKI-1122L...........................................10
Figure 2.8 Top View of EKI-1122L.............................................10
Figure 2.9 Front View of EKI-1124L ..........................................11
Figure 2.10Side View of EKI-1124L............................................11
Figure 2.11Back View of EKI-1124L...........................................12
Figure 2.12Top View of EKI-1224L.............................................12
2.4 Connecting Hardware .............................................................................13
2.4.1 Choosing the Location................................................................13
Figure 2.13Combine the Metal Mounting Kit ..............................13
Figure 2.14Din-rail Step1............................................................14
Figure 2.15Din-rail Step2............................................................15
2.4.2 Connecting Power.......................................................................15
Figure 2.16Power Connector......................................................15
2.4.3 Connecting Serial Device............................................................16
Table 2.2: EKI-1121L/1122L/1124L Serial Port Pin Assignments.
16
2.4.4 Connecting to a Host or the Network..........................................16
Chapter 3 Installation and Configuration..........17
3.1 Connecting the Hardware .......................................................................18
Figure 3.1 The boot up messages.............................................18
3.2 OS Configuration and Usage..................................................................19
3.2.1 Configure RTC............................................................................19
Figure 3.2 Configure RTC..........................................................19
3.2.2 Configure IP................................................................................20
Figure 3.3 Configure Ethernet Interface Using Static IP............20
Figure 3.4 Configure Ethernet Interface Using DHCP...............21
3.2.3 TELNET Service and Client........................................................22
Figure 3.5 TELNET Service and Client......................................22
3.2.4 FTP Service and Client...............................................................23
Figure 3.6 FTP Client in Another Computer ..............................23
Figure 3.7 FTP Command in Another Computer.......................24
Figure 3.8 FTP Client in EKI-1121/1122/1124...........................25

EKI-1121L/1122L/1124L User Manual vi
3.2.5 TFTP Service and Client............................................................. 26
Figure 3.9 TFTP Server in EKI-1121L/1122L/1124L................. 26
Figure 3.10TFTP Client in EKI-1121L/1122L/1124L .................. 27
3.2.6 NFS Client .................................................................................. 28
Figure 3.11NFS Client in EKI-1121L/1122L/1124L.................... 28
3.2.7 NTP Client .................................................................................. 29
Figure 3.12NTP Client in EKI-1121L/1122L/1124L.................... 29
3.2.8 SNMP Service ............................................................................ 30
Figure 3.13SNMP Client in EKI-1121L/1122L/1124L................. 30
Figure 3.14SNMP Message in Manage Computer..................... 31
3.2.9 Mail Client................................................................................... 32
Figure 3.15MAIL Client in EKI-1121/1122/1124......................... 32
3.2.10 Web Server................................................................................. 33
3.2.11 PPP Client .................................................................................. 33
3.2.12 PPPoE client............................................................................... 34
3.3 Partition of Flash..................................................................................... 35
Chapter 4 Development Guide ..........................37
4.1 Establish Develop Environment.............................................................. 38
4.1.1 Install the Cross Compile Tool Chain ......................................... 38
4.1.2 Setup the Runtime Environment................................................. 38
4.2 Put Applications into ............................................................................... 38
4.2.1 Check the Flash Memory Space................................................. 38
4.2.2 User Space via FTP.................................................................... 39
Figure 4.1 How to Get Applications via FTP.............................. 39
4.2.3 Root File-system......................................................................... 39
4.3 Device APIs ............................................................................................ 39
4.3.1 Serial port APIs........................................................................... 39
4.3.2 RTC APIs.................................................................................... 40
4.3.3 LED APIs.................................................................................... 40
Chapter 5 Troubleshooting................................43
5.1 Troubleshooting...................................................................................... 44
Appendix A Restore the Platform Kernel ............45
A.1 Restore the Platform Kernel.................................................................... 46
Appendix B Erase JFFS2 File System ................. 47
B.1 Erase JFFS2 File System....................................................................... 48
Appendix C Command Collection........................49
C.1 File manager........................................................................................... 50
C.2 Editor....................................................................................................... 50
C.3 Network................................................................................................... 51
C.4 Process................................................................................................... 51
C.5 Others..................................................................................................... 52

Chapter 1
1Introduction

EKI-1121L/1122L/1124L User Manual 2
1.1 Overview
The EKI-1121L/1122L/1124L is a Linux-based RISC-grade embedded platform that
offers 2 LAN and 1/2/4 serial ports.
EKI-1121L/1122L/1124L could operate well under 0~60°C. Its compact size and light
weight could fit in industrial robust environment. With these advantages, EKI-1121L/
1122L/1124L is suitable for communication gateway for converting communication
protocol.
EKI-1121L/1122L/1124L is a perfect embedded ready platform that can shorten your
development time and offer rich networking interfaces to fulfill your diverse require-
ments.
1.2 Features
Winbond ARM7 W90N740 80MHz Processor
16 MB SDRAM onboard, 8 MB Flash
1/2/4 independent RS-232/422/485 serial ports
Dual 10/100 Mbps Ethernet
1 channel LED for user define
Ready platform for Linux build in flash
Compact size and light weight
0~60°C wide range operation temperature
DIN-rail and wall mounting
10/100 Mbps Base-T standard
Surge protection for RS-485 line and power supply
Automatic RS-485 data flow control
1.3 Specifications
Boot-loader: Redboot
Kernel version: linux-2.6.29.6-rt24
C Library: uClibc 0.9.26
OS boot up time <= 9 seconds
Independent hardware watchdog timer
Real-time clock with battery
Ethernet communication compatibility: IEEE 802.3, IEEE802.3u
Protocols: IPv4, ARP, ICMP, UDP, TCP, HTTP, SNMP v1/v2c, NTP, FTP, TFTP,
TELNET, PAP, CHAP, DHCP, PPP, PPPoE, NFS, SMTP
Interfaces:
–Network: 2 10/100 BASE-T Ethernet ports
–Serial: 1/2 independent RS-232/422/485 serial ports
Serial ports:
–EKI-1121L: 1 independent RS-232/422/485 serial port
–EKI-1122L: 2 independent RS-232/422/485 serial ports
–EKI-1124L: 4 independent RS-232/422/485 serial ports
Connectors:
–Network: RJ-45
–Serial: DB9
Transmission speed: 50 bps to 921 Kbps
Parity bit: Odd, Even, None, Space, Mark

3 EKI-1121L/1122L/1124L User Manual
Chapter 1 Introduction
Data bits: 5, 6, 7, 8
Stop bits: 1, 1.5, 2
Flow Control: None, Xon/Xoff, RTS/CTS, DTR/DSR
Data Signals:
–RS-232: TxD, RxD, CTS, RTS, DTR, DSR, DCD, RI, GND
–RS-422: TxD+, TxD-, RxD+, RxD-, GND
–RS-485: Data+, Data-, GND
Diagnostic LEDs:
–Power
–Programmable Status LED
–Network: Link, Active
–Serial: Tx, Rx
Power Requirements: Dual unregulated 12 to 48 Vdc with surge protection
Power Consumption:
–EKI-1121L: 2 W
–EKI-1122L: 2.5 W
–EKI-1124L: 4 W
Enclosure: Metal with solid DIN rail or panel mounting hardware
Serial protection: 15KV ESD
Ethernet protection: Built-in 1.5 KV magnetic isolation
Operation Temperature: 0 ~ 60°C (32 ~ 140°F)
Storage Temperature: -20 ~ 80°C (-4 ~ 176°F)
Operating Humidity: 20 ~ 95% (non-condensing)
Storage Humidity: 0 ~ 95% (non-condensing)
1.4 Packing List
EKI-1121L/1122L/1124L
CD-ROM for BSP

EKI-1121L/1122L/1124L User Manual 4

Chapter 2
2Getting Started

EKI-1121L/1122L/1124L User Manual 6
In this chapter, you will be given an overview of the EKI-1121L/1122L/1124L hard-
ware installation procedures. As mentioned in the previous chapter, the EKI-1221L/
1222L/1224L comes ready with all network connections, including Ethernet and RS-
232/422 /485 port connections.
2.1 Understanding the EKI-1121L/1122L/1124L
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-1121L/1122L/1124L are
network-based, Modbus gateways for integrating new and existing Modbus/RTU and
Modbus/ASCII serial devices to newer TCP/IP networked-based devices. Manufac-
turers, system integrators, and end users can now take advantage of Modbus gate-
ways to create networked applications for remote managing and accessing data for
their control devices that wasn't possible before.
2.2 Hardware
The following instructions will give the overview of EKI-1121L/1122L/1124L hardware
and its installation.
2.2.1 LED Indicators
There are LEDs indicating the two sets of power status, system status, dual networks
status and serial communication status on the front panel of EKI-1121L, EKI-1122L,
and EKI-1124L. Each of them has its own specific meaning, please refer to the below
table.
Table 2.1: EKI-1121L/1122L/1124L LED Indicators
LED Name LED Color LED Description
P1 Green Power 1 is on.
Off Power 1 is off, or power error condition exists.
P2 Green Power 2 is on.
Off Power 2 is off, or power error condition exists.
Status (Default
behavior) Orange Blinking: System is ready.
Off System is not working.
Ethernet Orange Blinking: Ethernet port is transmitting or receiving data.
Steady on: Ethernet has the good link for 10Mbps or
100Mbps operations.
Green On: 100Mbps Ethernet connection.
Off: 10Mbps Ethernet connection.
Serial Orange Serial port is transmitting data. Green Serial port is receiving data.
Off No data is transmitted or received through the serial port.

7 EKI-1121L/1122L/1124L User Manual
Chapter 2 Getting Started
2.3 Dimensions (Units: mm)
EKI-1121L:
Figure 2.1 Front View of EKI-1121L
Figure 2.2 Side View of EKI-1121L

EKI-1121L/1122L/1124L User Manual 8
Figure 2.3 Back View of EKI-1121L
Figure 2.4 Top View of EKI-1121L

9 EKI-1121L/1122L/1124L User Manual
Chapter 2 Getting Started
EKI-1122L:
Figure 2.5 Front View of EKI-1122L
Figure 2.6 Side View of EKI-1122L

EKI-1121L/1122L/1124L User Manual 10
Figure 2.7 Back View of EKI-1122L
Figure 2.8 Top View of EKI-1122L

11 EKI-1121L/1122L/1124L User Manual
Chapter 2 Getting Started
EKI-1124L:
Figure 2.9 Front View of EKI-1124L
Figure 2.10 Side View of EKI-1124L

EKI-1121L/1122L/1124L User Manual 12
Figure 2.11 Back View of EKI-1124L
Figure 2.12 Top View of EKI-1224L

13 EKI-1121L/1122L/1124L User Manual
Chapter 2 Getting Started
2.4 Connecting Hardware
This section will explain how to find a proper location for your EKI-1121L/1122L/
1124L and how to connect to the network, hock up the power cable and connect to
the EKI-1121L/1122L/1124L.
2.4.1 Choosing the Location
Due to its versatility and innovative design, the EKI-1122L/1122L/1124L can be:
Fixed to a panel mount
Fixed to a DIN-rail
2.4.1.1 Panel/Wall Mounting
The EKI-1121L/1122L/1124L can be attached to a wall using the included metal
brackets. Each bracket comes with four screws. You can install the EKI-1121L/1122L/
1124L firmly via the components, please see the figure below.
Figure 2.13 Combine the Metal Mounting Kit

EKI-1121L/1122L/1124L User Manual 14
2.4.1.2 DIN-rail Mounting
The EKI-1121L/1122L/1124L can be mounted on a standard DIN-rail. The DIN-rail kit
is screwed on the Modbus data gateway when out of factory. If the DIN-rail kit is not
screwed on the EKI-1121L/1122L/1124L, please screw the DIN-rail kit on the Modbus
data gateway first.
First, hang the EKI-1121L/1122L/1124L to the DIN-rail with angle of inclination.
Please see the figure below.
Figure 2.14 Din-rail Step1