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
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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