西门子官方SIMATIC S7 APP

有条件的可以试一下

https://play.google.com/store/apps/details?id=com.siemens.simaticS7&hl=en

This application allows users to connect their smart devices to SIMATIC S7-1500, S7-1200, ET 200SP and Open Controller (PN/IO) via WIFI access point.

Features:
? Configure a control page to operate and monitor variables with a set of projectable control-types: gauge, button, slider, bar graph and output field. Of each control type, one control can be configured for free. If more controls of one control type are needed, the respective control type need to be unlocked via in-app-purchasing once. After unlocking, as many controls of the respective type as desired can be configured. However, the maximum number of controls is limited to 50 controls. 
NOTICE: To add controls to the control page an internet connection is needed. Usage of the control page is possible without an internet-connection. 
? Change the CPU operating mode (RUN/STOP)
? Read CPU and module diagnostic information and send via email
? Monitor and modify variables or tags in a list (max. 20)
? Display tags in trend view
? Languages: English and German

Handbook: 
If you need further information on how to setup and use the app, you find a handbook here: https://support.industry.siemens.com/cs/ww/en/view/109486019

Compatibility:
The application is compatible with SIMATIC S7-1500 and ET 200SP CPUs running V1.8 firmware or later and with S7-1200 CPUs running V3.0 firmware or later. The version does not support Android Version < 4.0. 
Android versions < 4.0 are no longer supported with updates!

这是个什么东东，楼主可以用中文介绍一下么？

 手机上直接监控PLC，应该是针对1200,1500的