The P.L.C. (Programmable Logic Controller) is one of the main components for industrial automation. It’s a modular industrial equipment that must be configured and programmed for the application.
In addition, the P.L.C. allows the integration of the machine and the plant within complex automation structures and it is one of the prerequisites to get incentives provided for the Industry 4.0 plan.
Many P.L.C brands are available on the market (Siemens, Rockwell, Schneider, Omron, etc.), which Tekna Automazione e Controllo can program and integrate into automation systems in order to meet specific customer needs.

The Simatic S7-1500 is the current top of the range of P.L.C. of Siemens. Significantly increases the performance of P.L.C. thanks to a fast backplane bus, standard PROFINET interface and short response times. It has internally integrated the functions of Motion Control, Fail Safe and S7-1500R/H hot back-up for applications where continuity of operation is essential.

P.L.C. SIEMENS Simatic S7 1500

Simatic S7-1200 controllers are the best choice for compact automation solutions in medium to low complexity applications, with integrated technology and communication functions.

P.L.C. SIEMENS Simatic S7 1200

The S7-400 controllers have been designed for complex automation and process solutions and have been the reference equipment in previous years for medium to high-end applications. The P.L.C. S7-400 admits multiprocessor solutions on the same chassis and allows expansion with more than 300 I/O modules. It is ideal for data-intensive activities typical of the process industry. Take full advantage of all the programming features of S7.

P.L.C. SIEMENS Simatic S7 400

In automation structures where the continuity of operation of the system is required, hot back up, even in the event of a fault of one of the CPUs: the two CPUs carry out program processing in a strictly synchronous way, work in parallel and in the event of fault of one of the two, control is automatically taken over by the other.

P.L.C. SIEMENS Simatic S7 400 hot back up

S7-300 controllers are suitable for medium applications and are used in modular and distributed structures. A wide range of modules can be used to expand the system or to create decentralized structures based on the task at hand. Connection to remote modules is achieved using Profibus-DP communication.

P.L.C. SIEMENS Simatic S7 300

The Simatic S5 135 is the P.L.C. which in the 90s was the reference point for medium/high complexity applications in multiprocessing applications, with special boards for motion control and communication applications using different protocols. Its applications are now implemented using the new Siemens S7 400 series.

P.L.C. SIEMENS Simatic S5 135

The Simatic S5 115 is the P.L.C. most used in the 90s for automation applications of machines and lines of medium complexity, with its functions of command, regulation, positioning and management of intelligent peripheral units for the execution of special tasks. Currently discontinued, it was replaced by the previous S7-300 and by the current S7-1200 and S7-1500.

P.L.C. SIEMENS Simatic S5 115U

ControLogix programmable controllers provide the performance, capability and productivity to meet the demand for intelligent manufacturing machines and systems. They are suitable for process control, motion control, discrete control and high availability applications. These controllers use the Studio 5000 design environment as standard software to maximize productivity and reduce commissioning time. They are ideal for applications requiring high performance communications, I/O and motion control up to 256 axes, SIL2/PLd and SIL3/PLe safety solutions and process control.

P.L.C. ALLEN BRADLEY Contrologix

The CompactLogix is ​​the most economical PLC of the Allen Bradley family and is suitable for applications starting from the machine builder up to medium-sized line control applications, guaranteeing EtherNet/IP communication, Control Net and DeviceNet communications. The different CPU models, with different performances, guarantee the management of safety, Integrated Motion on EhernNet/IP and high-speed motion control applications and SIL2/PLd safety solutions.


The SLC 500 is the small programmable controller widely used in the last 20 years for the automation of machines and production lines. It is currently discontinued and has been replaced by the ComplactLogix. The SLC500 application software, developed in the RSLogix5000 environment, can be easily migrated to the application software for CompactLogic, using Studio 5000 Logix Designer.


The P.L.C. NX701 is the highest performing Sysmac CPU available. It was designed to meet the most demanding motion and industrial control applications, creating the infrastructure to support Big Data. The AI ​​and SQL Controller versions of NX7 Machine Automation Control enable the collection, analysis and use of data for the purpose of detecting anomalies at high speed and accuracy (125 µs data collection cycle), as well as direct access to the SQL databases present on the CPU, via the integrated EtherNet/IP port.

P.L.C. OMRON Sysmac NX701 - 1600

Sysmac NJ301 controller covers functions and processing for machine control and safety, reliability and maintainability; ideal for controlling machines and control structures up to 8 axes. Control and synchronize functions with devices connected in EtherCat, such as vision sensors, servo drives, and field devices.

P.L.C. OMRON Sysmac NJ301

The Modicon 580 is designed to optimize the connectivity of Ethernet communications and ensure flexibility, robustness and sustainability to the automation solution. The processors enable high levels of computation for complex communication, visualization and control networks, allowing distributed devices (asynchronous with respect to application scanning) and remote I/O (synchronous with respect to application scanning) to be shared in the same network.

P.L.C. SCHNEIDER Modicon 580

Schneider Modicon 580 hot backup is used in automation structures where the continuity of operation of the plant is required.

P.L.C. SCHNEIDER Modicon 580 hot back up

The Modicon 340 is the mid-range PLC designed to be the solution to the needs of the process industry and the answer to the frequent questions of industrial automation applications. The Modicon M340 can be used individually, but it can also be transparently integrated into network infrastructures, thus increasing the performance, quality and profitability of the industrial process or machinery to be managed.

P.L.C. SCHNEIDER Modicon 340