Use of Siemens plcs7-200 (I) -- Introduction to development environment and configuration software

background

I have been doing industrial control development for several years , The entity's PLC Not much contact , Among them, Siemens s7-200 Count as PLC Products widely used in , So the recent project involves this production , Let's learn how to do simple PLC Programming and configuration software debugging .

Hardware

SIMATIC S7, CPU-200 SMART, 6ES7 288-1ST20-0AA1, Some treasure 700 many , Something 2000 many , The key is a piece of paper .

Three in the upper right corner IO It is the power connection port .

Power Supply
This is a matching one 24V Power Supply , It feels really good , Heavy , No loss is an official product .

Wiring way ：
24V just ----------------L+
24V negative ----------------M

Then connect the Ethernet port of the computer PLC Of the Internet .

Software

The software used is the official tool of Siemens , The software can be downloaded from the official website
Download address
Programming software and configuration software are mainly used .

STEP 7- Micro/WIN SMART yes S7-200 SMART Programming software based on . Support Windows 7 or Windows 10, The installation file is smaller than 300 MB, Integrate Modbus ,USS,PROFINET, Motion control and other library instructions .

PC Access SMART yes S7-200 SMART Communication with host computer OPC Software . With this software , The operator can easily read through the upper computer S7-200 SMART The data of , So as to realize equipment monitoring or data archiving management .

Download the above two software from the website , And install . It doesn't need any cracking at all ……

STEP 7- Micro/WIN SMART

This is programming software , After running , First of all PC To work with plc Establishing a connection .

Then you can search 192.168.2.1 Of PLC 了 , The default address is usually this . If you want to establish a connection , Yours PC Must be set to the same network segment IP Address . That doesn't explain it .

Then we can write a simple test program , Download Software , see PLC Can it work properly .

Refer to the user manual , The following ladder program is written

The general effect is , Timer 2s, stay 1s When Q0.0 Output high level , stay 2s When ,M0.0 Reset timer . The combined result is Q0.0 every other 1s Lighten up , Another time 1s Extinguish . Don't ask me why I understand , Because I don't understand either

Then program burning

Then the light starts flashing

As for other programming methods , You need to learn by yourself , After all, I'm just a novice .

The configuration software uses

After running the software , First, select the network card , Click on the network interface card , Choose the network card you use

Then build PLC, Interface and Step7 It's the same . Look up your PLC

After finding it , Right click in the space on the right , Insert entry
Here is a new read Q0.0 The operation of

Then add the entry to the following test client

Finally, open the test client

See the following values in 0 and 1 Change between


The simple configuration is completed . It's said that the configuration software on tall buildings needs to be charged , I don't dare to ask

Data download

Siemens s7-200 Chinese user manual

Conclusion

Today, I saw a news that a student of Xi'an University of Electronic Science and technology was informed after recruiting a representative , Also think of now C The Q & a part of the station , Most of them are college students who ask questions , Find someone else to help with the design and problems , He even offered money to solve , I always think this is not a good phenomenon .
I watched a teaching video of Professor Guo Chengcheng at noon today , Talked about the mental outlook of college students in the new era , Treat western countries , Be able to look at them head on , Keep your eyes wide open , Think about , This is a good start , No longer worship or even kneel as before .

But the attitude of learning , Be pragmatic , If you want to look down on others , You have to have real skills , Otherwise, it's just blind arrogance . The gap between us and the west is still obvious , It even takes decades to catch up . As the hope of the motherland , Do a simple programming problem , Also come online to post , What else did you learn .