Advantech EKI-1321 User manual

User Manual
EKI-1321/1322
1/2-port RS-232/422/485 to GPRS
IP Gateway

EKI-1321/1322 User Manual ii
Copyright
The documentation and the software included with this product are copyrighted 2013
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 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. Edition 2
Printed in Taiwan August 2013

iii EKI-1321/1322 User Manual
Declaration of Conformity
CE
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 B
Note: This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installa-
tion. This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with the instructions, may cause harmful inter-
ference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interfer-
ence to radio or television reception, which can be determined by turning the equip-
ment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
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
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.

EKI-1321/1322 User Manual iv
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 -40° C (-40° F) OR ABOVE
75°C (167° 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.
17. 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.
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.

v EKI-1321/1322 User Manual
Contents
Chapter 1 Overview...............................................1
1.1 Introduction ............................................................................................... 2
1.2 Features .................................................................................................... 3
1.3 Specifications ............................................................................................ 3
1.4 Package Check List .................................................................................. 4
Chapter 2 Getting Started.....................................5
2.1 Understanding EKI-1321/1322.................................................................. 6
2.1.1 Product Description....................................................................... 6
Figure 2.1 Cellular Network Connection ...................................... 6
2.1.2 COM Port Redirector (Virtual COM Port)...................................... 7
Figure 2.2 COM Port Redirector .................................................. 7
Figure 2.3 Multi-Access Mode ..................................................... 8
2.1.3 TCP Server Mode ......................................................................... 9
Figure 2.4 TCP Server Mode....................................................... 9
2.1.4 TCP Client Mode......................................................................... 10
Figure 2.5 TCP Client Mode ...................................................... 10
2.1.5 SMS Tunneling Mode ................................................................. 10
Figure 2.6 SMS Tunneling Mode ............................................... 10
2.1.6 UDP Server/Client Mode............................................................. 11
2.1.7 RFC2217 Mode........................................................................... 11
2.2 Hardware................................................................................................. 12
2.2.1 LED Indicators ............................................................................ 12
Table 2.1: EKI-1321/1322 LED Indicators ................................. 12
2.2.2 Dimensions (Units: mm).............................................................. 13
Figure 2.7 Front View of EKI-1321/1322 ................................... 13
Figure 2.8 Side View of EKI-1321/1322..................................... 14
Figure 2.9 Back View of EKI-1321/1322.................................... 14
Figure 2.10Top View of EKI-1321/1322...................................... 14
Figure 2.11Bottom View EKI-1321/1322 .................................... 15
2.3 Connecting Hardware ............................................................................. 16
2.3.1 Choosing the Location ................................................................ 16
2.3.2 Wall/Panel Mounting ................................................................... 16
Figure 2.12Attach the Wall Mounting Bracket ............................ 16
Figure 2.13Attach the Panel Mounting Bracket .......................... 17
2.3.3 DIN-rail Mounting ........................................................................ 18
Figure 2.14Attach to DIN-rail ...................................................... 18
2.3.4 GPRS Connection....................................................................... 18
2.3.5 Power Connection....................................................................... 19
Figure 2.15EKI-1321 Power Connector...................................... 19
Figure 2.16EKI-1322 Power Connector...................................... 19
2.3.6 Serial Connection........................................................................ 19
Table 2.2: EKI-1321/1322 Serial Pin Assignments.................... 19
2.4 Serial Device Server Configuration Utility ............................................... 20
Chapter 3 Utility Configuration ..........................23
3.1 Configuration Utility Overview ................................................................. 24
3.2 Discovering Serial Device Servers.......................................................... 25
3.2.1 Auto Searching ........................................................................... 25
3.2.2 Clear Device List and Search Again ........................................... 27
3.2.3 Manual Appending ...................................................................... 28

EKI-1321/1322 User Manual vi
3.3 Network Settings..................................................................................... 29
Chapter 4 Setting COM Redirector ................... 33
4.1 Setting COM Redirector (Virtual COM port)............................................ 34
4.1.1 Auto Mapping.............................................................................. 34
4.1.2 Manual Mapping ......................................................................... 35
4.1.3 Manual Direct Mapping Virtual COM Port................................... 37
4.1.4 Remove the Virtual COM Port .................................................... 37
Chapter 5 Web Configuration............................ 39
5.1 Overview ................................................................................................. 40
5.2 Accessing the Web Page........................................................................ 40
5.3 System Configuration.............................................................................. 41
5.4 DDNS Configuration ............................................................................... 41
5.5 NAT Configuration .................................................................................. 42
5.6 OpenVPN Configuration ......................................................................... 44
5.7 Ethernet Configuration ............................................................................ 45
5.7.1 Eth1 Configuration ...................................................................... 45
5.7.2 GPRS Configuration ................................................................... 46
5.8 Port Configuration ................................................................................... 47
5.8.1 Setting Serial Port Parameters ................................................... 48
5.8.2 Setting Virtual COM Operating Mode Parameters...................... 50
5.8.3 Setting TCP/UDP Server/Client Operating Mode Parameters.... 52
5.8.4 Setting Control Operating Mode Parameters.............................. 54
5.8.5 Setting RFC2217 Operating Mode parameters .......................... 56
5.8.6 SMS Operating Mode Parameters.............................................. 57
5.8.7 Advanced Setting........................................................................ 58
5.9 Monitor COM information........................................................................ 59
5.9.1 Setting information...................................................................... 59
5.9.2 Statistical information.................................................................. 59
5.9.3 Connected IP information ........................................................... 60
5.10 Alert......................................................................................................... 61
5.10.1 Setting......................................................................................... 61
5.10.2 Event........................................................................................... 62
5.11 LogFile .................................................................................................... 62
5.12 Change Password................................................................................... 62
5.13 Reboot .................................................................................................... 63
Appendix A Troubleshooting................................ 65
A.1 Successful GPRS Connection ................................................................ 66
A.2 Failed GPRS Connection........................................................................ 67

Chapter 1
1Overview

EKI-1321/1322 User Manual 2
1.1 Introduction
Advantech's EKI-1300 series of Industrial Device Servers are a robust, feature-rich,
and cost effective way to network-enable equipment in an industrial automation envi-
ronment. The EKI-1321/1322 provides one or two serial ports, cellular GPRS inter-
face to connect any RS-232/422/485 devices to Cellular WAN. These wireless serial
device servers provide serial-to-wireless network connectivity as an alternative to
wired Ethernet connectivity and enable virtually any serial device or equipment to be
remotely accessed, controlled, monitored, or shared on an cellular wireless network.
By encapsulating serial data and transporting it over Ethernet, the EKI-1321/1322
allows virtual serial links over Ethernet and IP (TCP/IP, UDP/IP networks. After
Advantech Serial Device Server Configuration Utility installation, standard serial
operation calls are transparently redirected to the serial device servers, guaranteeing
compatibility with legacy serial devices and enabling backward compatibility with
existing software. EKI-1321/1322 also supports serial tunneling, allowing two native
serial devices to communicate over a network without any hosts and programming.
As a result, you can extend limited distance, point-to-point, direct serial connections
within the plant, throughout the factory, the facility, the office building, or across the
global enterprise.
The EKI-1321/1322 provides an impressive list of features and functions enabling
multiple industrial devices to be connected, controlled, configured, managed, and
updated over a network. With serial ports and cellular GSM/GPRS/EDGE, the EKI-
1321/1322 can easily connects multiple serial devices to the internet.
The transmission speed of the EKI-1321/1322 is up to 921.6 Kbps totally outstripping
the competition to meet the demand for high-speed exchange. Functionally transpar-
ent and efficient, the EKI-1321/1322 is especially designed for remotely controlling
and monitoring devices via the Internet.
Type of supported devices:
Human Machine Interface (HMI)
Programmable Controller (PLC)
Flow meters
Temperature / pressure monitoring equipment
Gas leak detection device
Scales
Power monitoring equipment
Data Acquisition Modules
EKI-1321/1322 provides various TCP/UDP operations: COM port redirection (Virtual
COM port), TCP server/ client and UDP mode, RFC2217 and SMS Tunnel mode.
Serial devices can be connected by means of multi-access modes.

3 EKI-1321/1322 User Manual
Chapter 1 Overview
1.2 Features
Expand up 255 serial ports for one Windows 2000/XP/Vista (x86) host
Link any serial device to a cellular network
Supports high transmission speed up to 921.6 kbps
Supports LED indicators: easy to diagnose
Supports various operation modes: VCOM, RVCOM, TCP Server/Client, UDP
Server/Client, RFC2217 and SMS Tunnel
Supports multi-access: allows a max. of 5 hosts to access one serial port
A max of 4 hosts can be accessed in TCP client and command response mode
Mounts on DIN-rail, or panel
15 KV ESD protection for all signals
2KV isolation protection for all serial signals (EKI-1321 only)
1.3 Specifications
Cellular Interface
Standard Compliance: GSM/GPRS Quad Band 850/900 and 1800/1900MHz
Antenna Connector: Reverse SMA
GPRS Standard:
–GPRS Multi-slot: Class 10
–GPRS Terminal Device: Class B
–GPRS Coding Schemes: CS1 to CS4
LAN Interface
Ethernet: 10/100 Mbps auto sensing
No. of Ports: 1
Port Connector: RJ45
Protection: Built-in 1.5 KV magnetic isolation
Serial Interface
Interface: RS-232/422/485, software selectable
No. of Ports:
–EKI-1321:1 w/ isolation
–EKI-1322: 2
Port Connector: DB9 male
Baud Rate: 50 bps to 921.6 kbps, any baud rate setting
Parity: None, Even, Odd, Space, Mark
Data bits: 5, 6, 7, 8
Stop bits: 1, 1.5, 2
Flow control: RTS/CTS, DTR/DSR, XON/XOFF, None
Signals:
–RS-232: TxD, RxD, CTS, RTS, DTR, DSR, DCD, RI, GND
–RS-422: TxD+, TxD-, RxD+, RxD-, GND
–RS-485: Data+, Data-, GND
Protection: 15 KV ESD for all signals

EKI-1321/1322 User Manual 4
Software
Utility: Advantech Serial Device Server Configuration Utility
Driver support: 32-bit/64-bit Windows 2000/XP/Vista/7, Windows Server 2003/
2008, Windows CE 5.0, and Linux
Operation Mode:
–COM port redirection (Virtual COM)
–RVCOM (Reversed Virtual COM)
–TCP/UDP server (polling) mode
–TCP/UDP client (event handling) mode
–RFC2217 mode
–SMS Tunnel
–IP Gateway with VPN
Configuration: Web interface, Windows utility
Protocol: ICMP, TCP/IP, UDP, DHCP Client, Telnet, DNS, SNMP, HTTP, HTTPS,
NTP, SNTP, ARP, SSL
Router/Firewall: NAT, port forwarding
General
LED indicators:
–System: Power, Status
–GSM/GPRS: Signal Strength, GPRS Ready
–LAN: Link/Active, 10/100M
–Serial: Tx, Rx
–Others: SD
–EKI-1321 Others: Relay, DI
Power
Power input: 12 to 48 VDC x 2
Power connector: Terminal block
Power Consumption:
–EKI-1321: 8W
–EKI-1322: 8.5W
Environmental
Operation Temperature: -30 ~ 65°C (-22 ~ 149°F)
Storage Temperature: -40 ~ 75°C (-40 ~ 167°F)
Operating Humidity: 5 to 95% RH
Regulatory Approvals
EMC: CE, FCC Part 15 Subpart B (Class A)
1.4 Package Check List
EKI-1321/1322 GPRS serial device server
1 x RS-232 loopback DB9 tester
Panel mounting bracket
CD-ROM for utility and manual
EMI Dia. 10.8mm/L82mm 5 Band GPRS Antenna
Optional Accessory
OPT1-DB9-AE D-sub 9 (female) to terminal block connector (for EKI-1000
series RS-422/485 use)

Chapter 2
2Getting Started

EKI-1321/1322 User Manual 6
2.1 Understanding EKI-1321/1322
The EKI-1321/1322 is network-based, serial device server for connecting RS-232/
422/485 devices, such as CNCs, PLCs, scales, and scanners, directly to a TCP/IP
network. Once connected through EKI-1321/1322, serial device will be able to send
and receive data through cellular ISP network like any other network device. It
extends traditional COM ports of a PC with access over a TCP/IP network. Through
networking, you can control monitor remote serial devices either over a LAN or over
the WAN. Since the EKI-1321/1322 is connected through a TCP/IP network, you
might need to know some basic facts about networking in order to get the server
hooked up correctly.
2.1.1 Product Description
The EKI-1321/1322 is designed to network-enable any RS-232/422/485 serial
devices and provides industry-grade hardware and easy-to-use software to make
connecting serial devices to an Ethernet network a surprisingly simple process.
These units immediately upgrade your existing serial devices for integration into the
Internet world. The EKI-1321/1322 features a lot of powerful functions such as: high
speed data transfer, access-control, auto-detection of all EKI series products, remote
connection from different network domain, remote firmware download, and more.
After the simple installation steps to attach your network and serial device to the
appropriate connectors on the serial device servers and driver installation, you will be
able to communicate with the serial devices via its own application software and with
the EKI serial device server. COM port redirector, TCP server mode, TCP client
mode, UDP server mode, UDP client mode, RFC2217, SMS Tunnel and IP Gateway
mode are all different schemes to make a serial connection across using one or more
Serial device server.
EKI-1321/1322 has GSM/GPRS transceiver in addition to its serial and Ethernet port.
Each serial port is connected to the serial communication port of a device. The GSM/
GPRS transceiver connects to another device through ISP cellular network.
Figure 2.1 Cellular Network Connection

7 EKI-1321/1322 User Manual
Chapter 2 Getting Started
2.1.2 COM Port Redirector (Virtual COM Port)
Advantech Serial Device Server Configuration Utility is a serial COM port redirector
that creates virtual COM ports and provides access to serial device connected to
Advantech serial device server. You can configure the serial device server and
enable the Virtual COM port using one integrated utility. Advantech Serial Device
Server Configuration Utility allows you to configure Microsoft applications to
communicate with network enabled serial device servers as easily as if they were
physically installed in or directly connected on the PC.
The Advantech redirector can create up to 255 virtual COM ports. Application on the
host can open virtual COM port to access the serial device servers at the same time.
The redirector will handle each active virtual COM port as a separate TCP
connection to Advantech serial device servers.
Figure 2.2 COM Port Redirector
2.1.2.1 Normal Mode
The Advantech redirector connects the Advantech serial device servers while an
application open the COM port and disconnects from the Advantech serial device
servers when the application closes the COM port. The redirector uses TCP network
connections to the Advantech serial device server to gain the access to the
connected serial devices.

EKI-1321/1322 User Manual 8
2.1.2.2 Multi-Access Mode (Shared COM port mode)
Most of serial devices are connected directly and physically to the PC serial ports via
a cable. The operation system, ex. Windows XP, provides the COM ports that user’s
application can access, and control the serial device through the serial cable. This
means that the serial device can be connected to one host and only one application
on this host can handle input, output and control operation on this device.
If you want to run more than one applications to use a serial device, you can employ
EKI serial device servers that provide a virtual COM port for a host or multi-hosts on
an Ethernet network. EKI serial device server is located between hosts and serial
devices. Each serial port on the EKI serial device server can allow max. of five host
connections through cellular WAN. There are two major operation modes for Multi-
Access Mode. First one is broadcast mode; EKI serial device server handles a com-
mand from one application and replies the data from the serial port to all applications
that are connecting this serial port. Another is polling mode; EKI serial device server
handles the command from one application and reply to this application only. Query
from other applications must be queued and wait for current process completing.
Figure 2.3 Multi-Access Mode
By using a serial device server to share serial device, you eliminate the separate
serial lines and serial devices that can be attached to individual hosts. Collecting the
data from these serial devices become more easily and more effectively.

9 EKI-1321/1322 User Manual
Chapter 2 Getting Started
2.1.2.3 Reversed Virtual COM Port Mode (RVCOM)
Sometimes, the EKI serial device server has a dynamic IP address, or even a private
IP address. The host PC can't connect to the device directly. With the RVCOM func-
tion, the EKI serial device server can connect to a specific PC when booting up. That
can help the end devices easily cross the Ethernet barrier.
When the application opens, the RVCOM port and the connection between host and
device is not yet established, the open COM port action still will return success. And
the write action will always be successful and the read action will not trigger or just no
data. The situation is similar to the COM port that doesn't connect to any serial
device.
After the EKI serial device server is established, the Ethernet connection, the behav-
ior is similar to VCOM mode.
2.1.3 TCP Server Mode
In TCP server mode, you might initiate the TCP connection from host to EKI serial
device server. This operation mode support max. five simultaneous connections for
each serial port on EKI serial device server from one host or several hosts, however
multi-hosts collect the data from one serial port at the same time
Figure 2.4 TCP Server Mode

EKI-1321/1322 User Manual 10
2.1.4 TCP Client Mode
In TCP Client mode, the TCP connection will be established from EKI serial device
server. This operation mode supports maximum four simultaneous connections for
each serial port on EKI-1321/1322 to one host or several hosts. You should configure
the IP address and TCP port number of the network hosts which the EKI serial device
server connect to using Advantech Serial Device Server Configuration Utility. After
configuration, when EKI serial device server receives the data from serial port, the
device server will employ the connection to hosts which are configured.
Figure 2.5 TCP Client Mode
2.1.5 SMS Tunneling Mode
Two native serial devices can communicate over an Ethernet network without any
intermediate host PC and software programming. SMS Tunneling is very simple to
use. You can use Advantech Serial Device Server Configuration Utility to configure
SMS Tunnel Mode can be used to update the message on a remote display panel,
place refill orders for vending machines, maintain remote rental equipment, or even
help create an SMS alarm by directly transforming text, binary, or unicode data from
a legacy device to short messages.
Figure 2.6 SMS Tunneling Mode

11 EKI-1321/1322 User Manual
Chapter 2 Getting Started
2.1.6 UDP Server/Client Mode
UDP is used primarily for broadcasting messages over a network. In the UDP server
mode, EKI-1321/1322 access max. of 8 hosts’ UDP message. In the UDP client
mode, EKI serial device servers transmit UDP message to max. of 4 hosts
simultaneously.
2.1.7 RFC2217 Mode
RFC2217 mode is similar to virtual COM mode in that a driver is used to establish a
transparent connection between a host computer and a serial device by mapping the
serial port on EKI-1321/1322 device to a local COM port on host computer. RFC2217
defines general COM port control options based on the Telnet protocol. Third party
drivers supporting RFC-2217 are widely available on the Internet and can be used to
implement virtual COM mapping to the serial port of your device.

EKI-1321/1322 User Manual 12
2.2 Hardware
In this section, we will give you an overview of EKI-1321/1322 hardware and
installation.
2.2.1 LED Indicators
There are LEDs display the power status, network status, and serial communication
status located on the front panel of EKI-1321 and EKI-1322, each of them has its own
specific meaning as below.
Table 2.1: EKI-1321/1322 LED Indicators
LED Name LED Color LED Description
PWR1
Signal
Strength 3
Green Steady On Power 1 is on
Orange Steady On RSSI is better than -51 dBm
Off Power 1 is off and RSSI signal strength is poor than -51
dBm
PWR2
Signal
Strength 2
Green Steady On Power 2 is on
Orange Steady On RSSI is better than -109 ~ -51 dBm
Off Power 2 is off and RSSI signal strength is poorer than
-109 dbm
GPRS
Ready
Signal
Strength 1
Green Steady On GPRS network is ready
Orange Steady On RSSI is poorer than -109 dBm
Off GPRS network can't be used
Status Orange Steady On Detect signal strength and try to dial-up ISP network
Green Steady On Already dial-up and get a IP Address from ISP provider
(GPRS connection is ready)
Link/SD Green Blinking Ethernet port is transmitting or receiving data
Orange Steady On SD Card is inserted
10/100M Green Steady On Ethernet has the good link for 100Mbps
Off Ethernet has link to 10Mbps or no link
P1 Tx/Rx Green Blinking Serial port is transmitting data
Orange Blinking Serial port is receiving data
Off No data is transmitted or received through the serial port
P2 Tx/Rx Green Blinking Serial port is transmitting data
Orange Blinking Serial port is receiving data
Off No data is transmitted or received through the serial port

13 EKI-1321/1322 User Manual
Chapter 2 Getting Started
2.2.2 Dimensions (Units: mm)
2.2.2.1 EKI-1321 and EKI-1322
Figure 2.7 Front View of EKI-1321/1322
120
27
27
120
129.8

EKI-1321/1322 User Manual 14
Figure 2.8 Side View of EKI-1321/1322
Figure 2.9 Back View of EKI-1321/1322
Figure 2.10 Top View of EKI-1321/1322
102.88
74.30
85
93.90
102.88
85
93.9
74.3