Programmable logic controller, control unit, and method for calculating lifespan of unit
A programming logic and control unit technology, which is applied in the direction of program control, program control, electrical program control, etc. in the sequence/logic controller, can solve problems such as system stop, and achieve the effect of preventing cost increase
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[0018] figure 1 It is a figure which shows the structural example of the programmable logic controller (PLC) which concerns on embodiment of this invention. PLC 100 according to this embodiment is realized by combining a plurality of units. Specifically, the PLC 100 is composed of various units such as a base unit 1 , a power supply unit 2 , a control unit 3 , and a controlled unit 4 . In addition, the PLC 100 has one or more controlled units 4 .
[0019] The basic unit 1 electrically connects the power supply unit 2 , the control unit 3 and the controlled unit 4 . The power supply unit 2 supplies power to the control unit 3 and the controlled unit 4 via the base unit 1 . The control unit 3 controls the controlled unit 4 . The controlled unit 4 is various units that operate according to instructions from the control unit 3 . The controlled unit 4 is an input unit that inputs signals from sensors installed in production equipment and equipment, an output unit that outputs ...
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