PLC Program
Sunday, October 31st, 2010Programmable Logic Controller (PLC) has been initiated by a group of engineers used the General Motor Company in 1968 where the system has many advantages.
1.) Easy to PLC Programs
and Modify it easily.
2.) Easy for maintenance, reparation Using nature as a Plug-in module.
3.) System reliability and smaller device size compared with the relay system.
4.) Cost to a lesser extent compared with relays.
Such advantages of the PLC Programs
system of far flung interest . Demand of PLC features increased significantly . Technologies in this force field has been producing rapidly. From basic logic circuits has become a simple command. As well as to develop and include. counter, timer, shift registers, advance mathematical add on of the Hardware section of the structure has been acquired as a memory with large number of input-output that much.
Later, around 1976 have been fabricated devices Remote I O rack, a device that backs up the use of the I O distant respective hundred meters from the main PLC Programs.
Around year 1977. the fellowship Allan-Bradley Potbelly has acceptation of microprocessor 8080, application programs from the PLC has been developed and are usable to many grades of her coevals. MF 1980 has begun . Development Interigent I O and increase the ability to communicate.
Also in the rung Sen Pat has more modules, such as Analog I O, PID control, communications, graphic display, add on I O, additional memory, etc..
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