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PLC p_st70_xx_05817e (Main Parts: (Power supply, Central Processing Unit…
PLC 
Automation
Subsequently control the actuators such as pistons, motors, valves, etc ... and thus control any industrial process automatically.
Uses:
Machinery maneuver, Facilities Maneuver, Car industry, Tire manufacturing, Petrochemical and chemical plants, Other industrial sectors
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Types
Compact
They have incorporated the power supply, its CPU and the input and output modules in a single main module and allow to handle from a few inputs and outputs to several hundred but can not expand their models, their size is larger than those of Nano type and support a variety of special modules
Modular
This type has the advantage that they can be configured according to the needs since each module is separate and you can assemble your PLC according to your needs.
Nano
Generally they integrate the power supply, the CPU and the inputs and outputs the difference between the compact type is that it handles a reduced set of inputs and outputs. The nano type allows to handle digital inputs and outputs and some special modules.
The great advantage of PLCs, unlike computers, is the large number of inputs and outputs that can be managed as well as their durability and operating capacity in aggressive environments for electronics.
This means that companies save money on maintenance.
Control
The perfect integration and intuitive operation reduce set-up times and guarantee the highest level of productivity of the machine and system while providing flexibility for product changes.
It is basically an industrial computer which processes all the data of a machine such as sensors, buttons, timers and any input signal
Programmable
This type has the advantage that they can be configured according to the needs since each module is separate and you can assemble your PLC according to your needs.
Hardware Components
Interface module (IM), connects different individual cassettes with
a single PLC;
Communication processor (CP), connects the PLC in a network of
industrial work, e.g. Industrial Ethernet, PROFIBUS, AS - interface,
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Functional module (FM), complex time-critical processing of
CPU independent processes, for example, fast counting;
Versatile
Like the modular PLC this type of system is widely used in the manufacturing industry. This is mainly because of the amount of input/output points that the system can contain but also because it has the ability to communicate with other networks.
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