Advantech ECU-125 Series User manual

User Manual
ECU-125X Series
(1251/1251D/1252)

ECU-125X Series User Manual ii
Copyright
The documentation and the software included with this product are copyrighted 2022
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. The 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 that may result from its use.
Acknowledgments
Intel, Pentium, Celeron and Atom 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.
Support
For more information on this and other Advantech products, please visit our websites
at: http://www.advantech.com
For technical support and service, please visit our support website at:
http://www.advantech.com/support/
This manual is for ECU-125X Series.
Part No. Edition 1
Printed in China October 2022

iii ECU-125X Series User Manual
Product Warranty (2 years)
Advantech warrants the original purchaser that each of its products will be free from
defects in materials and workmanship for two years from the date of purchase.
This warranty does not apply to any products that have been repaired or altered by
persons other than repair personnel authorized by Advantech, or products that 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
customers never need to use our repair service. If an Advantech product is defective,
it will be repaired or replaced free of charge during the warranty period. For out-of-
warranty repairs, customers will be billed according to the cost of replacement mate-
rials, service time, and freight. Please consult your dealer for more details.
If you believe your product to be defective, follow the steps outlined below.
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 displayed when the prob-
lem 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 a return merchandise authori-
zation (RMA) number from your dealer. This allows us to process your return
more quickly.
4. Carefully pack the defective product, a completed Repair and Replacement
Order Card, and a proof of purchase date (such as a photocopy of your sales
receipt) into a shippable container. Products returned without a proof of pur-
chase date are not eligible for warranty service.
5. Write the RMA number clearly on the outside of the package and ship the pack-
age prepaid to your dealer.

ECU-125X Series User Manual iv
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
type of cable is available from Advantech. Please contact your local supplier for
ordering information.
Test conditions for passing also include the equipment being operated within an
industrial enclosure. In order to protect the product from damage caused by electro-
static discharge (ESD) and EMI leakage, we strongly recommend the use of CE-
compliant industrial enclosure products.
FCC Class A
This equipment has been tested and found to comply with the limits for a Class A dig-
ital device, pursuant to part 15 of the FCC Rules. These limits are designed to pro-
vide 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
this event, users are required to correct the interference at their own expense.
Technical Support and Assistance
1. Visit the Advantech website at www.advantech.com/support to obtain the latest
product information.
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 calling:
–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
Packing List
Before system installation, check that the items listed below are included and in good
condition. If any item does not accord with the list, contact your dealer immediately.
ECU-125X
1 x warranty card
Connector
Din rail
Screws

v ECU-125X Series User Manual
Safety Instructions
1. Read these safety instructions carefully.
2. Retain this user manual for future reference.
3. Disconnect the equipment from all power outlets before cleaning. Use only a
damp cloth for cleaning. Do not use liquid or spray detergents.
4. For pluggable equipment, the power outlet socket must be located near the
equipment and easily accessible.
5. Protect the equipment from humidity.
6. Place the equipment on a reliable surface during installation. Dropping or letting
the equipment 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. Ensure that the voltage of the power source is correct before connecting the
equipment to a power outlet.
9. Position the power cord away from high-traffic areas. 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 from transient overvoltage.
12. Never pour 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 any of the following occurs, have the equipment checked by service person-
nel:
–The power cord or plug is damaged.
–Liquid has penetrated the equipment.
–The equipment has been exposed to moisture.
–The equipment is malfunctioning, or does not operate according to the user
manual.
–The equipment has been dropped and damaged.
–The equipment shows obvious signs of breakage.
15. Do not leave the equipment in an environment with a storage temperature of
below -25° C (-13° F) or above 70° C (158° F) as this may damage the compo-
nents. The equipment should be kept in a controlled environment.
16. CAUTION: Batteries are at risk of exploding if incorrectly replaced. Replace only
with the same or equivalent type as recommended by the manufacturer. Discard
used batteries according to the manufacturer’s instructions.
17. Due to the sensitive nature of the equipment it must be stored in a restricted
access location, only accessible by qualified engineers.
18. When installing this equipment, ensure that the Earth cable is securely attached
using a 3.5mm screw.
19. The equipment does not include a power cord and plug.
20. In accordance with IEC 704-1:1982 specifications, the sound pressure level at
the operator’s position does not exceed 70 dB (A).
DISCLAIMER: These instructions are provided according to IEC 704-1 standards.
Advantech disclaims all responsibility for the accuracy of any statements contained
herein.

ECU-125X Series User Manual vi
Safety Precautions - 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 the PC chassis
before manual handling. Do not touch any components on the CPU card or
other cards while the PC is powered on.
Disconnect the power before making any configuration changes. A sudden rush
of power after connecting a jumper or installing a card may damage sensitive
electronic components.

vii ECU-125X Series User Manual
Contents
Chapter 1 Overview...............................................1
1.1 Introduction ............................................................................................... 2
1.2 Specifications............................................................................................ 3
1.2.1 General ......................................................................................... 3
1.2.2 System .......................................................................................... 3
1.2.3 Communication ............................................................................. 3
1.2.4 Software........................................................................................ 3
1.2.5 Environment.................................................................................. 3
1.3 Safety Precautions.................................................................................... 4
1.4 Chassis Dimensions.................................................................................. 4
Figure 1.1 ECU-1251 Chassis Dimensions ................................. 4
Figure 1.2 ECU-1251D Chassis Dimensions............................... 5
Figure 1.3 ECU-1252 Chassis Dimensions ................................. 5
Chapter 2 Hardware Functionality.......................7
2.1 Overview ................................................................................................... 8
Figure 2.1 ECU-1251/ECU-1251D Overview.............................. 8
Figure 2.2 ECU-1252 Overview................................................... 8
2.2 LED Status Indicators ............................................................................... 9
Figure 2.3 ECU-1251/ECU-1251D/ECU-1252 LED Status Indica-
tor ............................................................................... 9
2.2.1 System Status Indicators .............................................................. 9
2.2.2 Serial Communication Status Indicator....................................... 10
Figure 2.4 ECU-1251/ECU-1251D/ECU-1252 Serial Status Indi-
cator.......................................................................... 10
2.2.3 Ethernet Status Indicator ............................................................ 11
Chapter 3 Wiring and Installation ......................13
3.1 Wiring ...................................................................................................... 14
3.1.1 Power Supply Wiring................................................................... 14
Figure 3.1 Power Supply Wiring ................................................ 14
Table 3.1: AC/DC Power Input Connector Pin Definition .......... 14
3.1.2 Communication Ports.................................................................. 14
Figure 3.2 ECU-1251/ECU-1251D/ECU-1252 Serial Ports ....... 14
Table 3.2: RS-232/485 Serial Ports (Pin Assignments)............. 14
3.1.3 USB Port ..................................................................................... 15
Figure 3.3 USB Connector......................................................... 15
Table 3.3: USB Connector Pin Assignment............................... 15
3.1.4 LAN Port ..................................................................................... 15
Figure 3.4 LAN Connectors ....................................................... 15
Table 3.4: LAN Connector Pin Assignments ............................. 15
3.1.5 Node ID....................................................................................... 16
Figure 3.5 Dial Switch Setting.................................................... 16
Table 3.5: ECU-1251 Node ID Setting ...................................... 16
3.1.6 Digital Input/Digital Output Port................................................... 16
Figure 3.6 DI/O Wiring ............................................................... 16
3.2 Jumper Setting ........................................................................................ 17
3.2.1 Jumper Setting............................................................................ 17
Figure 3.7 ECU-1251 Jumper on the Back Motherboard .......... 17
Figure 3.8 ECU-1251D Jumper on the Back Motherboard........ 17
Figure 3.9 ECU-1252 Jumper on the Back Motherboard .......... 18

ECU-125X Series User Manual viii
Table 3.6: Jumper Setting of Terminal Resistor For COM ........ 18
3.2.2 Debug Port.................................................................................. 18
3.3 Installation............................................................................................... 19
3.3.1 Wall-mounted and DIN-Rail Installation...................................... 19
Figure 3.10Wall-mounted Installation ......................................... 19
Figure 3.11Vertical DIN-Rail Bracket Installation ....................... 20
Figure 3.12Vertical DIN-Rail Installation..................................... 20
3.3.2 SD&SIM Card Installation ........................................................... 20
Figure 3.13SD &SIM Card Installation........................................ 20
3.3.3 Installing a Wireless Module Card and Antenna (Optional) ........ 21

Chapter 1
1Overview

ECU-125X Series User Manual 2
1.1 Introduction
For solar power, electricity and factory related applications which require a total wire-
less and Ethernet communication solutions, Advantech has released the ECU-1251
RISC-based industrial communication gateway. ECU-1251 has an open platform
design with Cortex A8 processor, up to four RS-232/485 isolated serial ports, two 10/
100 Ethernet ports and operating temperature range of -40~70° C. ECU-1251D has
additional 4DI/4DO while ECU-1252 has CAN*2. The Linux operating system and
open TagLink SDK enable system integrators to develop applications which precisely
fit their need.
ECU-1251 ECU-1251D ECU-1252

3 ECU-125X Series User Manual
Chapter 1 Overview
1.2 Specifications
1.2.1 General
Certification: CE, FCC
Mounting: Wall-Mount/ DIN-Rail
Power Consumption: 2.4W @ 24VDC
Power Requirements: 10 ~ 30 VDC
1.2.2 System
CPU:
–TI Cortex A8, 800MHz (ECU-1251)
–TI Cortex A8, 600MHz (ECU-1251D)
–TI Cortex A9, 600MHz (ECU-1252)
Memory:
–DDR3L 256MB (ECU-1251)
–DDR3L 256MB (ECU-1251D)
–DDR3L 2GB (ECU-1252)
Indicators: Power, LAN (LINK, ACT), Serial (Tx, Rx), Programmable
Storage for system:
–1GB Micro-SD card (ECU-1251)
–512MB NAND Flash (ECU-1251D)
–16GB eMMC (ECU-1252)
SD Slot: 1 x Micro-SD slot
Watchdog: Yes
Node ID: 8-bit
Real-time clock: Yes
1.2.3 Communication
Serial Port:
–4 x RS-232/485 (ECU-1251)
–2 x RS-232/485 (ECU-1251D)
–2 x RS-232/485 (ECU-1252)
Isolation: 3000 VDC
Serial Port Speed: 50 ~ 115200 bps
Ethernet Port: 2 x 10/100 Base-T RJ-45 ports
USB Port: 1 x USB2.0 (ECU-1251)
CAN Port: 2 x CAN (2PIN)
Wireless (Optional): Interface: 1x Mini-PCIe (Full-size)
1.2.4 Software
OS Support: Linux Kernel 4.9
Programming: Linux C
1.2.5 Environment
Humidity: 5~95% (non-condensing)
Operating Temperature: -40 ~ 70° C
Storage Temperature: -40~85° C

ECU-125X Series User Manual 4
1.3 Safety Precautions
The following messages informs how to make each connection. In most cases, you
will simply need to connect a standard cable.
1.4 Chassis Dimensions
Figure 1.1 ECU-1251 Chassis Dimensions
Warning! Always disconnect the power cord from your chassis whenever you are
working on it. Do not connect while the power is on. A sudden rush of
power can damage sensitive electronic components. Only experienced
electronics personnel should open the chassis.
Caution! Always ground yourself to remove any static electric charge before
touching ECU-1251 Series. Modern electronic devices are very sensi-
tive to static electric charges. Use a grounding wrist strap at all times.
Place all electronic components on a static-dissipative surface or in a
static-shielded bag.
Note! If DC voltage is supplied by an external circuit, please put a protection
device in the power supply input port.

5 ECU-125X Series User Manual
Chapter 1 Overview
Figure 1.2 ECU-1251D Chassis Dimensions
Figure 1.3 ECU-1252 Chassis Dimensions

ECU-125X Series User Manual 6

Chapter 2
2Hardware
Functionality

ECU-125X Series User Manual 8
2.1 Overview
The following figures show the panel configuration on ECU-1251. More information of
each peripheral is included in the following sections.
Figure 2.1 ECU-1251/ECU-1251D Overview
Figure 2.2 ECU-1252 Overview

9 ECU-125X Series User Manual
Chapter 2 Hardware Functionality
2.2 LED Status Indicators
The LEDs in the front panel can be divided into 4 groups:
Figure 2.3 ECU-1251/ECU-1251D/ECU-1252 LED Status Indicator
2.2.1 System Status Indicators
ECU-1251 ECU-1251D ECU-1252
LED Status Description
PWR Green Power is on
Off Power is off
PL Green Customers can define the programmable LED state accord-
ing to their actual need
Off

ECU-125X Series User Manual 10
2.2.2 Serial Communication Status Indicator
Figure 2.4 ECU-1251/ECU-1251D/ECU-1252 Serial Status Indicator
LED Color Description
TX1 Orange Blinking, Serial port 1 data being transmitted
RX1 Green Blinking, Serial port 1 data being received
TX2 Orange Blinking, Serial port 2 data being transmitted
RX2 Green Blinking, Serial port 2 data being received
TX3 Orange Blinking, Serial port 3 data being transmitted
RX3 Green Blinking, Serial port 3 data being received
TX4 Orange Blinking, Serial port 4 data being transmitted
RX4 Green Blinking, Serial port 4 data being received

11 ECU-125X Series User Manual
Chapter 2 Hardware Functionality
2.2.3 Ethernet Status Indicator
ECU-1251, ECU-1251D
ECU-1252
LED Status Description
Link
(Port 1~2)
Off 10 Mbps network linked
Green 100 Mbps network linked
Act
(Port 1~2)
Orange On No data being transmitted
Orange Blinking Data being transmitted
LED Status Description
Link
(Port 1~2)
Off 10 Mbps network linked
Orange 100 Mbps network linked
Green 1000 Mbps network linked
Act
(Port 1~2)
Green On No data being transmitted
Green Blinking Data being transmitted

ECU-125X Series User Manual 12