why can my WinCC Unified not communicate with 1200?

你好，为什么我的wincc Unified无法与1200通讯，wincc Unified屏幕上的变量无法从PLC中得到。

h ello，warum kann mein WinCC Unified Nic mit 1200 kommunizieren？Die Variablen aufdemWinCC-Unified-BildschirmkönnennichtvonPLC bezogen werden 

[Please use english in the english forum:

Hello, why can't my WinCC Unified not communicate with 1200? The variables on the WinCC Unified screen can't be referenced by PLC]

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Split from WinCC Unified – How to change screens by input of the plc?.

Hi, 

up to now, the WinCC unified works with real PLC and with PLCSim Advanced (not yet with PLCSIM "no advanced").

PC/PG接口没有设置正确，在控制面板里面需要设置的。

Configure PC/PG Interface.

Hello,

I have a real S7-1200 at the office and it's working with my WinCC Unified PC Runtime REAL and Simulation.

Set your PG/PC interface so your in TCP.IP link to S7ONLINE access point (this 90% of communication mistake)

No need to install SImatic Net for WInCC Unified (it's not like WinCC V7 and Professionnal)