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3. MODBUS/TCP GENERAL
Modbus/TCP is a protocol for communication between devices in a network, based on the Modbus protocol
and the TCP/IP protocol.
Modbus is a serial-based protocol that is widely used in industrial automation to transmit measurement data,
control commands, and status messages. It is
also widely used in computer network technology and is used to connect devices in a network.
The Modbus/TCP protocol allows to connect controllers and gateways in Ethernet networks by embedding
Modbus data packets into TCP/IP data packets. It uses the standard port number 502.
The protocol works with two types of packets: Requests and responses. A request is sent from one device to
another to retrieve data or send commands. The response contains the data or confirmation that the
command has been executed.
It also supports various functions, including reading and writing data registers, reading input registers, and
reading and writing lock bits.
Modbus/TCP provides an effective and reliable way to exchange data between different devices on a
network and is used in many different applications in industrial automation, building automation and other
fields.
4. MODBUS COMMUNICATION ECO GATEWAY
Modbus is de facto the common bus standard for communication between PLC machine controllers and the
machine-related environment in industry.
No PLC controller on the market can do without this bus interface. The success story of the Modbus
standard was initiated in 1979 by Gould-Modicon for communication with its programmable logic controllers.
In the industry, Modbus has become a standard because it is an open protocol. Since 2007, the Modbus
TCP version has been part of the IEC 61158 standard. (Source: https://de.wikipedia.org/wiki/Modbus)
ESERA has Modbus/TCP and Modbus/RTU as an integral part of the data interfaces of the ECO Gateway
product series, and can thus connect various industry standards, such as Modbus, MQTT, LoRaWAN, NB-
IoT and 1-Wire, via gateways.
During the development of the ECO sensor gateways, special emphasis was placed on user-friendliness and
many automatic functions. This is additionally supported by a configuration software,
Config Tool 3, which combines all desirable functions up to the documentation and an installation report.
By the ESERA gateways are intended for a wide range of applications, even far outside the industry
attractive. The application areas include all commercial applications, such as smart home, smart building,
data center, OT and IoT systems.
