Esera ECO 502 PRO Manuel utilisateur

Art. No. 11608-24

Subject to technical changes. © ESERA GmbH 2023

www.esera.de 11608-24 V1.0 R1.6 Manual Page 1 from 31

OPERATING INSTRUCTIONS

ECO 502 PRO

INDUSTRIAL SENSOR GATEWAY

MODBUS/RTU, 1-Wire bus

of the 3rd generation for the

1-Wire bus system

HIGHLIGHTS

Fully automatic PLUG and PLAY

system for up to 30 sensors

⎯

Web server and access point

for configuration, debug and firmware

updates

⎯

Data interface for

Modbus/RTU, MQTT and ASCII

⎯

Auto-E-Connect Plug and Play

Level I to III

⎯

Fast readout of all devices

in 5 seconds cycle

⎯

Low maintenance industrial unit,

because without Linux. Native

programmed with known libraries

⎯

WLAN interface

for data, configuration, debug

and firmware updates

⎯

Extended temperature range

-5°C to 50°C

⎯

Rugged industrial design

⎯

Extensive protection circuits and good

device protection

⎯

Simple assembly

 
 
 
All rights reserved. Reprinting, including excerpts, not permitted without the express consent of ESERA GmbH. 
Subject to technical changes. © ESERA GmbH 2023 
www.esera.de 11608-24 V1.0 R1.6 Manual Page 2 from 31 
TABLE OF CONTENTS 
 
TABLE OF CONTENTS.....................................................................................................................................2 
1ADDITIONAL DOCUMENTS AND SOFTWARE..................................................................................3 
2PRODUCT DESCRIPTION ...................................................................................................................4 
3INDUSTRIAL ENVIRONMENT FOR THE ECO 502 SENSOR GATEWAY.........................................5 
4ECO GATEWAY SYSTEM....................................................................................................................5 
5THE ECO GATEWAY CONCEPT.........................................................................................................5 
6DEVICE CONSTRUCTION ...................................................................................................................7 
6.1 INTERFACE / SENSOR INTERFACE AND I/O SECTION...................................................................7 
7ECO 502 GATEWAY FUNCTIONS.......................................................................................................9 
8AUTO-E-CONNECT® PLUG AND PLAY SYSTEM...........................................................................10 
9SCOPE OF FUNCTIONS AUTO-E-CONNECT SYSTEM ..................................................................10 
10 PATENT AUTO-E-CONNECT® SYSTEM..........................................................................................11 
11 TECHNICAL DATA .............................................................................................................................13 
12 ENVIRONMENTAL CONDITIONS......................................................................................................14 
13 CONFORMITY.....................................................................................................................................14 
14 DISPLAY LED .....................................................................................................................................14 
15 CONNECTION PLAN.........................................................................................................................15 
16 CONNECTION EXAMPLE ..................................................................................................................16 
17 ACTIVATE ACCESS POINT...............................................................................................................17 
18 SELECT ACCESS POINT...................................................................................................................18 
19 CALL WEB SERVER VIA WIFI ..........................................................................................................19 
20 CALL WEBSERVER VIA LAN............................................................................................................19 
21 WEBSERVER, LOG IN .......................................................................................................................20 
22 DATA INTERFACE, ASCII PROTOCOL............................................................................................21 
23 ESERA ASCII TEXT PROTOCOL ......................................................................................................21 
24 MODBUS/RTU PROTOCOL...............................................................................................................22 
25 MQTT PROTOCOL .............................................................................................................................24 
26 YOUR PROTOCOL NOT THERE?.....................................................................................................26 
27 1-WIRE NETWORK CABLING ...........................................................................................................26 
28 FIRMWARE UPDATE .........................................................................................................................27 
29 RECOVERY FUNCTION.....................................................................................................................27 
30 RESET BUTTON.................................................................................................................................27 
31 EXAMPLES FOR CODESYS / WAGO INTEGRATION .....................................................................28 
32 EXAMPLES FOR SIEMENS SPS INTEGRATION.............................................................................28 
33 OPERATING CONDITIONS................................................................................................................28 
34 ASSEMBLY.........................................................................................................................................28 
35 DISPOSAL...........................................................................................................................................28 
36 SAFETY INSTRUCTIONS...................................................................................................................29 
37 WARRANTY........................................................................................................................................30 
38 PROMOTERS OF THE FREE INTERNET..........................................................................................30 
39 WARNING ...........................................................................................................................................31 
40 CONTACT ...........................................................................................................................................31 
 
 

Art. No. 11608-24

Subject to technical changes. © ESERA GmbH 2023

www.esera.de 11608-24 V1.0 R1.6 Manual Page 3 from 31

1 ADDITIONAL DOCUMENTS AND SOFTWARE

The ECO 502 Gateway operating manual consists of these product-specific and cross-product documents.

The cross-product documents apply to several devices.

To obtain the cross-product documents and additional software, please follow the links below to our website

(https://esera.de).

Please read the complete documents to the end and follow the information and instructions.

If you have trouble finding the documents or software you need, you can also contact our customer support.

We will be happy to help you with any questions or problems.

INTERFACE MANUAL

MODBUS, MQTT, LoRaWAN, NB-IoT

Manual for configuring the interface via web server and

access point

The manual can be found in the ESERA download area

at:

https://download.esera.de/download/technical/schnittstellen_handbuc

CONFIG TOOL 3 SOFTWARE

Comprehensive software for all EC and ECO gateways

with 1-Wire section

You can find the software in the ESERA download area

at:

https://download.esera.de/download/technical/config%20tool%

203

MODBUS INTERFACE MANUAL V2

FOR GATEWAY WITH WEBSERVER

Manual for configuring the Modbus/TCP and

Modbus/RTU interface for ECO gateways with web

server and access point

The Modbus manual can be found in the ESERA

download area at:

https://download.esera.de/download/technical/programmierha

ndbuch

PLANNING AID FOR 1-WIRE SYSTEMS

Here we offer you a small Excel tool to calculate your 1-

Wire system.

The Excel tool can be found in the ESERA download

area at:

https://download.esera.de/download/technical/planungshilfe_1

-Wire

Subject to technical changes. © ESERA GmbH 2023

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2 PRODUCT DESCRIPTION

APPLICATION

•Highly up-to-date, universal Modbus/RTU sensor interface for all modern machines,

Plants and consumers

•Energetic optimization through many sensors

•Industrial equipment, mechanical engineering, building management, IoT and M2M

•Manufacturer-independent usable

•Up to 30 sensors can be connected via plug and play

ADVANTAGE

•Cost and time savings due to fast installation and commissioning

•Connect, switch on and you already get measured values

•Intuitive operation via web server

DESCRIPTION

The ECO 502 gateway is a powerful Modbus/RTU sensor interface of the latest generation for plant and

system monitoring.

The gateway has an access point and web server.

Up to 30 sensors can be connected to the ECO 502 fully automatically, via Industrial 1-Wire Bus using the

Auto-E-Connect Plug and Play system.

A wide range of sensors is available, such as temperature, humidity, dew point, air quality (CO2, VOC or fine

dust), digital alarm signalling contacts, glass breakage and smoke detectors.

The configuration, software updates, sensor and production data of the connected sensors are conveniently

made available via web server.

The web server is accessible via LAN and via the access point (activation at the push of a button).

This system represents a low maintenance industrial device. The gateway has been programmed natively

over many years. No Linux and no unknown libraries are used.

Extensive software support is available free of charge.

The WLAN interface can be used to communicate with up to 3 data connections via MQTT and ASCII text

protocol.

For reliable operation in industrial environments, the ECO 502 gateway is supplied with 9-30VDC DC

voltage.

Overall, the ECO 502 gateway offers a robust and user-friendly solution for monitoring machines, plants and

systems thanks to its extensive functions and easy integration of sensors.

Note

Before starting to assemble the device and put the product into operation, read these

operating instructions carefully to the end. Especially the section on safety

instructions.

If you have problems downloading the advanced documents or software, please

contact our support by mail at [email protected]e.

We are very concerned to act in an environmentally friendly and resource-saving way

for you. That is why we use paper and cardboard instead of plastics wherever

possible. We would also like to make a contribution to the environment with these

paperless instructions.

Please think of the environment before printing these instructions.

Art. No. 11608-24

Subject to technical changes. © ESERA GmbH 2023

www.esera.de 11608-24 V1.0 R1.6 Manual Page 5 from 31

3 INDUSTRIAL ENVIRONMENT FOR THE ECO 502 SENSOR GATEWAY

4 ECO GATEWAY SYSTEM

Many sensors, powerful interface and access point

5 The ECO Gateway Concept

For all ECO gateways, we have developed and applied a system concept based on our decades of

experience in the development of electronic devices.

THIS CONCEPT CONTAINS THE FOLLOWING POINTS

CONNECTION OF SENSORS

The system concept allows a large number of sensors to be connected via the Industrial 1-Wire Bus using

Auto-E-Connect. This process is fully automatic, which simplifies installation and configuration.

Subject to technical changes. © ESERA GmbH 2023

www.esera.de 11608-24 V1.0 R1.6 Manual Page 6 from 31

NUMBER OF SENSORS

Up to 30 sensors can be connected to an ECO gateway. These sensors can provide a maximum of 150

sensor values in total.

ANALOG AND DIGITAL INPUTS

In addition to the sensors connected via 1-Wire bus, the ECO gateways also offer direct analog and digital

inputs. This means that other sensors or devices can also be connected directly to the gateway.

CASE INTERIOR CLIMATE MONITORING

The system concept includes a climate monitoring system for the interior of the case. It monitors various

parameters such as temperature, humidity, etc. and has limit values and an alarm system to detect potential

problems at an early stage.

POWERFUL DATA INTERFACE

The ECO gateways offer an extremely powerful data interface that supports up to 5 simultaneous data

connections to control systems and PLC controllers. This allows the acquired sensor values to be transmitted

efficiently in real time.

CONFIGURATION VIA WEBSERVER

The settings of the device can be made via a web server. This gives users a user-friendly interface for

configuring and monitoring the gateway.

ACCESS POINT

The ECO gateways have a connectable access point that enables independent access by mobile devices

such as smartphones, tablets or laptops. This also allows users to access the gateway wirelessly and

monitor and control the data.

Art. No. 11608-24

Subject to technical changes. © ESERA GmbH 2023

www.esera.de 11608-24 V1.0 R1.6 Manual Page 7 from 31

6 DEVICE CONSTRUCTION

The basic structure of all ESERA ECO gateways consists of two sections. The following is a general

description of the functions and advantages resulting from the structure.

The description is not applicable to all devices, but represents a general description about all ECO gateways.

6.1 INTERFACE / SENSOR INTERFACE AND I/O SECTION

The following is a general description of the functions and advantages resulting from the structure.

SECTION I, I/O SECTION/GATEWAY

This section includes the 1-Wire bus, the eBus and/or a sensor unit. It is specially optimized for the

acquisition and communication of sensor information.

The I/O section is designed as an independent, microcontroller-based electronic unit.

SECTION II, DATA INTERFACE, MAXI INTERFACE

The data interface or also called Maxi Interface represents the powerful communication interface of the

gateway. It enables the connection to other systems, control systems or controllers. The Maxi Interface is

also designed as a separate electronic unit based on a microcontroller.

ADVANTAGES OF THE SEPARATE SECTIONS

Below are some of the advantages that result from the device's structure in two sections:

MODULAR EXPANSION OPTIONS

Due to the construction of the device in two sections, extensions and upgrades can be easily carried out.

When a new function or additional module is needed, it can simply be inserted into the appropriate section

without having to replace all the hardware. This allows flexible adaptation of the device to the specific

requirements and needs of the user.

EASY MAINTENANCE AND REPAIR

The modular design also facilitates maintenance and repair of the unit. If a problem occurs in one section, it

can be checked and repaired separately without affecting the functionality of the other section. This reduces

downtime and allows problems to be fixed more quickly.

SCALABILITY AND FLEXIBILITY

The two-section design of the device allows easy scaling and adaptation to changing requirements. Different

sections with different functions can be combined to meet the requirements of a specific application area.

This makes the device flexible to use and adapt to different scenarios.

SPACE AND COST SAVINGS

Due to the modular design and the possibility of expansion, the device can be used more efficiently. There is

no need to purchase separate devices for different functions, but they can be integrated into a single device.

This saves space and costs for additional hardware.

NATIVELY PROGRAMMED

The sections are natively programmed, which means that they do not rely on Linux or other operating

systems. This contributes to the gateway's low maintenance and enables many years of use without frequent

updates.

SEPARATE CONSTRUCTION

The separate design of the two sections offers advantages in terms of security and operational readiness. In

the event of attempted interference or cyber sabotage attacks on one of the sections, the other section

remains unaffected and operational.

VARIOUS I/O FUNCTIONS AND INTERFACES

Depending on the requirements and the field of application of the ECO gateways, different I/O functions such

as 1-Wire or eBus as well as different interfaces such as Ethernet, WLAN, NB-IoT and LoRaWAN are

available. This allows the gateways to be adapted to different environments and applications.

Subject to technical changes. © ESERA GmbH 2023

www.esera.de 11608-24 V1.0 R1.6 Manual Page 8 from 31

Overall, the two-section design and associated benefits of the device provide increased flexibility, security,

scalability and efficiency in the use of the device.

Implementation of specific protection measures

In addition, the implementation of specific protection measures in each section of the gateway

provides

provides increased security and protection against potential attacks. Here are some of the protections that

can be implemented in each section of the gateway:

•SECURE BOOT

Using Secure Boot ensures that only trusted and authenticated software components are loaded

during the boot process. This prevents malicious or unauthorized code from running and

compromising the system.

•ENCRYPTION TECHNIQUES

Sensitive data exchanged between the sections of the gateway can be protected by encryption

techniques. For example, symmetric or asymmetric encryption algorithms are used here to ensure the

confidentiality and integrity of the data.

•TPM BUILDING STONES

Trusted Platform Modules (TPM) are special hardware modules that are used to securely store

cryptographic keys and perform security-related operations. The use of TPM modules can further

strengthen the security functions of the gateway, as they enable the detection of hardware tampering,

for example, and support the secure generation and management of keys.

These protective measures help to increase the security of the gateway and ward off potential attacks. They

ensure the integrity of the system, protect against unauthorized access to sensitive data, and ensure

trustworthy and secure communication between the sections of the gateway. The use of these security

mechanisms minimizes the risk of security breaches and unauthorized access.

Overall, the separate sections, the powerful communication interface and the security measures provide a

robust and flexible system for the acquisition, transmission and backup of sensor data. The use of native

programming and the absence of Linux ensure reliable and low-maintenance use of the ECO gateways over

a long period of time.

Art. No. 11608-24

Subject to technical changes. © ESERA GmbH 2023

www.esera.de 11608-24 V1.0 R1.6 Manual Page 9 from 31

7 ECO 502 GATEWAY FUNCTIONS

The ECO 502 gateway offers various functions and interfaces for data communication and management of

1-Wire networks. Here are some important features and information about the functions:

DATA INTERFACE

WLAN interface, support of different data protocols like TCP/IP and UDP.

Up to 3 simultaneous data connections plus web server possible.

MODBUS/RTU INTERFACE

Modbus/RTU interface is a common communication interface used in industrial automation systems. It

enables the transfer of data between different devices via a serial connection.

Modbus/RTU is based on the Modbus protocol and uses the RTU (Remote Terminal Unit) transmission

format. It is typically implemented via RS-485 or RS-232 serial interfaces.

The Modbus/RTU interface supports communication between a master device and several slave devices.

The master initiates the communication and sends requests to the slaves to read data or send commands.

The slaves then respond according to the master's requests.

MQTT PROTOCOL

For M2M (Machine-to-Machine) and IoT (Internet of Things) applications.

Data connection via MQTT to a broker for sending and receiving data.

Send interval can be set via the web server.

Names can be added for 1-Wire sensors via Config Tool and are used in the send protocol. Default names

are used if no specific names are specified.

More details about the MQTT protocol can be found in the document "Interface manual" on the website.

ASCII TEXT PROTOCOL

The 1-Wire sensor data are output by the ECO 502 gateway ready prepared.

For example, temperature sensors are output in °C cyclically. Scaling requires only a division by 100.

Part numbers for ESERA modules can also be entered, whereby the calculation and output are adapted to

the function of the module.

SENSORS AND ACTUATORS

The ECO 502 Sensor Gateway supports up to 30 sensors.

Sensors are automatically connected to the Industrial 1-Wire bus via the Auto-E-Connect Plug and Play

system. Each sensor can provide up to 5 readings, for a total of up to 150 sensor data to your control system

or PLC.

AUTARKIC MANAGEMENT

The Sensor Gateway enables the autarkic management of a 1-Wire network.

No 1-Wire commands or formulas are required to evaluate the sensors and actuators.

The ECO 502 PRO gateway automatically scans the 1-Wire network for new 1-Wire devices, reads their

Auto-E-Connect data and outputs the converted data in plain text.

DESIGNED FOR ALL 1-WIRE NETWORKS

The 1-Wire interface of the ECO 502 PRO is specially designed for large 1-Wire networks with long cable

runs. 1-Wire devices can be operated in mixed parasitic or normal mode.

The interface offers maximum data security, even for complex network structures.

VOLTAGE SUPPLY

The ECO 502 gateway can be operated with a voltage of 9-30 VDC.

Suitable for 12V and 24V power supply systems in stationary and mobile applications.

Suitable DIN rail or plug-in power supplies are available in the webshop.

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COMMISSIONING

Support videos for commissioning and configuration can be found on our website www.esera.de under

"Service and Support", Support Videos.

8 AUTO-E-CONNECT® PLUG AND PLAY SYSTEM

The Auto-E-Connect® 1-Wire Plug and Play system enables fully automatic

configurations of the 1-Wire sensors and actuators on the 1-Wire bus. It offers

various added values and time savings for the customer. The system has been

optimized over many years and is optimized for Smart Building, industrial applications and IoT.

The Auto-E-Connect system automatically recognizes sensors and actuators and starts suitable libraries.

The data is ready formatted and output. These functions run automatically in the background during the

installation and commissioning of sensors and actuators.

The Auto-E-Connect system consists of three complementary levels that extend the functionality. With these

functions, fully automatic configurations of the 1-Wire sensors and actuators on the 1-Wire bus can be

realized.

Please note that the Auto-E-Connect functionality will be available for the ESERA ECO Gateways and

Station 200 Pro from 2021.

9 SCOPE OF FUNCTIONS AUTO-E-CONNECT SYSTEM

The three levels of the Auto-E-Connect system provide advanced functions and automation for the

installation and configuration of sensors and actuators in the 1-Wire bus.

Below are three levels of the Auto-E-Connect system

Level I

OWD Detect stands for "One-Wire Device Detect" and refers to the function of the ECO gateway to

automatically detect new sensors and actuators and to start adapted libraries within the gateway. This

saves time when connecting a new device to a 1-Wire gateway.

When a new sensor or actuator is connected to the 1-Wire bus, the ECO gateway automatically detects the

new device. It then automatically starts the corresponding libraries that are required for the detected device.

This function makes the integration of new sensors and actuators much easier, as the manual configuration

effort is eliminated. It saves time and simplifies the installation process, as the gateway independently makes

the necessary settings and adjustments.

OWD Detect thus avoids the time-consuming manual configuration of new devices on the 1-Wire gateway,

which saves time overall when connecting new devices.

Level II

The ECO Gateway offers the possibility to read out and visualize the Auto-E-Connect data and

manufacturer data of sensors and actuators. Various information such as article number, date of

manufacture, firmware version and hardware version can be displayed.

Reading out this data gives you a detailed overview of the properties and specifications of the connected

sensors and actuators. This can help you manage and monitor your 1-Wire devices.

The visualization of the data can be done in different ways, depending on the functions and possibilities of

the ECO Gateway. This can be done, for example, via a web-based user interface or special software

provided by the manufacturer.

NOTE

Basics and tips on the 1-Wire bus system can be found in the ESERA Online Shop at

1-Wire Basics or please refer to our eBook in the store under Training/Documentation.

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