PLC is actually a set of ready microcontroller ( MCU wide range of oh ) system .
PLC
ladder you can be understood as a compilation of calculators with the
same language is a programming language , but a different range ! But
common practice by the PLC ladder software to convert your C or assembly
language ( used by the PLC the CPU determines ) , then use the
assembler or Nanda Plc controller manufacturers
C compiler system compiled into machine code ! PLC is running just a
few yards of it . ladder only allows users to more easily use it.
Similarly
the MCS-51 course also be used for making PLC , just eight CPU in some
advanced applications such as: a large number of operations ( including
floating point ) , embedded systems ( our equipment is slow, but the
main logic control , but points many Oh , 128 I / O too ! ! ) , but also
use ladder programming , we compile our ladder into KEIL C51 reuse of
C51. you do not notice the choice of different models of the PLC the CPU
you ! ! course, you can direct the development of single-chip control
systems, but very demanding for the developer (not the general level
capable of ) , long development cycles, high costs ( for some large
decency you need to do a little experiment , printing board requires a
substantial amount of money , you can say you use Nanda china industrial automation plc
the simulator , using experimental board to develop, but I want to
tell you , do you just verify the feasibility of the hardware and
software , does not mean you can use in industry control systems,
industrial control systems because the requirements are very high
anti-interference , stable first , rather than the performance of the
first , so you must constantly test the circuit board design ,
improvement ) when you solve these problems, you will find that you have
to do with a PLC , of course, easy to use if you need someone to be
able to use the software you'll need a set , so you may not need to tell
others about your circuit ( you can not tell anyone ) .
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