三菱的編程軟件從早期的FXGPWIN到近期的GX8.0(小編所知道新的)，和所有的日系品牌一樣，該軟件的編程思路是自上而下的單一 縱向結構，而西門子的MicroWIN則是縱向和橫向兼備的結構，而且子程序支持局部變量，相同的功能只需要編一次程序即可，大大減少了開發難度和時間。2、S7-200一直以來支持強大的浮點運算，編程軟件直接支持小數點輸入輸出，而三菱直至近年推出的FX3U系列才有此種功能，以前的FX2N系列的浮點功能都是假的。3、S7-200的模擬量輸入輸出程序非常簡單方便，AD、DA值可以不需編程直接存取的，三菱的FX2N及其以前的系列都需要非常繁瑣的FROMTO指令。FX3U如今倒支持此功能了，但足足晚了五年甚至更多。4、當然三菱的FX2N系列也有它自己的優勢，一是高速計數器指令比S7-200方便，二是422口比西門子的PPI口皮實（因為200系列的PPI口是非光電隔離的非規范操作和仿制的編程電纜可能會導致串口損壞）。以上的比較僅僅是小型機，至于西門子的300和400系列以及更大型的TDC系列，這里就無需多言了。學PLC，三菱是很容易上手的，因為直來直去思路簡單，但從學習的角度講，肯定是西門子更好。
Mitsubishi's programming software is from the early fxgpwin to the recent gx8.0 (the latest known by Xiaobian). Like all Japanese brands, the programming idea of this software is a single vertical structure from top to bottom, while Siemens' microwin is a structure with both vertical and horizontal structures. Moreover, the subroutine supports local variables, and the same function only needs to be programmed once, which greatly reduces the difficulty and time of development. 2. S7-200 has always supported powerful floating-point operation, and the programming software directly supports decimal point input and output. Mitsubishi didn't have this function until the FX3U series launched in recent years. The floating-point function of the previous FX2N series is false. 3. The analog input and output program of S7-200 is very simple and convenient. AD and Da values can be accessed directly without programming. Mitsubishi FX2N and its previous series require very cumbersome fromto instructions. FX3U now supports this function, but it is five years or more late. 4. Of course, Mitsubishi FX2N series also has its own advantages. First, the high-speed counter instruction is more convenient than S7-200, and second, the 422 port is more compact than Siemens' PPI port (because the PPI port of 200 series is non photoelectric isolation, non-standard operation and imitation programming cable may cause serial port damage). The above comparison is only for small computers. As for Siemens' 300 and 400 series and larger TDC series, there is no need to say more here. Mitsubishi is easy to learn PLC, because it is straightforward and simple, but from the perspective of learning, Siemens is definitely better.
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