AiLux installs the equipment satisfying the remote control and data acquisition criteria towards Terna Rete Italia (annex A6), which offers the possibility to connect directly to customer data (digital inputs, analog inputs) or via communication protocols such as Modbus / Siemens PDU.


The prescriptions contained in the document apply to all plants whose exercise has influence on the
Relevant Network, and in particular to:

● All stations and primary cabins that are part of the RR, even if belonging to networks of
● Production plants connected (directly or indirectly) with the RR
● Stations of other interconnected networks
● Plants of Users directly connected to the RR
The electrical connection of a plant is perfected with the implementation of the prescriptions provided for in the following processes:
● Telecontrol
● Remote monitoring
● Teleconduction, with exclusive reference to teledistacco operations as required by current legislation
● Teleregulation

These provisions provide for the exchange of data and information between the equipment of the owners or managers of the aforementioned plants and Terna’s systems, as regulated.

We make available to Terna all the measures and signals that ensure the observability of each plant. In particular, we support all the essential management functions of the electricity system, such as for example the state estimate, the financial statements, the calculation of the reserve and losses, as defined.
The information we process is available in a manner that is perfectly compatible with the Control System. We simplify the responsibility and the burden of the Interested Subject to transmit data from the system to Terna’s offices, including dedicated communication channels, and implement the hardware interfaces for the conversion of formats and protocols.


Direct Acquisition: Data exchange takes place through direct connections between the teleoperation machines (RTU), located on the plants, and Terna’s control system. It is possible to share the same RTU devices used by the Interested Subject, for example for the remote control of their systems, provided that these devices are capable of managing multiple connections at the same time.

Indirect Acquisition: The Interested Subject concentrates information on several plants (acquired autonomously from their own peripheral equipment) at a single collection point and sends them to Terna through our equipment (Concentrators or Gateways), whose technical and functional characteristics
they are previously submitted for approval by Terna. Terna attaches particular importance to the availability of information coming from the field. To this end, the interested party must provide the necessary redundancy of the communication equipment and channels, regardless of the type of connection chosen until termination at the competent Terna Office. The data exchange protocol used is IEC 870-5-104.

In order to allow a correct management of the entire control system, we transmit in real time to Terna the status (operational, out of service, etc.) of all the equipment involved in the data acquisition and transmission process (RTU, Concentrators, Gateway, etc.). It is the responsibility of the Interested Subject to submit to Terna the list of diagnostic information made available by the chosen equipment for data exchange. In the case of transmission through gateways, we send out-of-service and operable states of all the sub-RTUs belonging to the gateway. The transmission of this status information obviously takes into account the connection mode chosen by the Interested Subject. For example, in the case of “direct” acquisition, the status of each RTU is automatically detected by Terna’s systems. In the case of “indirect” acquisition, this information must be acquired and retransmitted by the Interested Subject.

Ask for infos

Informations request

Automation systems for electrical sub-stations

We develop flexible and ready-to-go architectures for the automation and remote monitoring of public, private and Multi-utility electrical stations.


In our Ailux Glossary you can find the definitions of the terms used in our...