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S7-1200 CPU 12xx -- Configuring and programming communication -- Configuring communication to HMIs

	How do you display the diagnostics buffer of a SIMATIC CPU with integrated web server on a SIMATIC Panel?
	How do you synchronize the time of the HMI Basic Panel with an S7-1200 PLC?
	How do you access S7-1200 tags with a panel or RT configured with WinCC flexible 2008 SP2?
	With which devices can the S7-1200 communicate over the integrated PROFINET interface and which protocols does the S7-1200 support?
	How can you access tags of the S7-1200 with WinCC?

WinCC -- Configuring and programming communication -- Programming and connecting OPC clients

	How can you access tags of the S7-1200 with WinCC?
	OPC communications link between a WinCC station and an AS
	How can you use the OPC channel of WinCC to connect to a local OPC server on a stand-alone computer that has no network card installed?
	What triggers the following error message in the OPC Item Manager: "Cannot access desired OPC server. ... ... Class not registered"?
	How is it that the time stamp of an OPC server tag is shifted by a number of hours when I read it out on the OPC client?
	What steps are required to start up a WinCC station as OPC server or as OPC client (OLE for Process Control)?
	How does the interface between WinCC and Microsoft Excel work if WinCC and Excel are installed on different computers?
	OPC channel - meaning of the "Read data from" property

How can you access tags of the S7-1200 with WinCC?

Part number:

Description
It is possible to access tags of the S7-1200 from WinCC via the OPC.
For this, you create a PC station with an OPC server. You can access the OPC server with WinCC.
A detailed description of the required procedure is available in chapters 1 to 5 of the PDF in Entry ID 39960679.

Validity
This FAQ is valid for

S7-1200 CPUs up to and including firmware version V1.0.2.
WinCC up to and including version V7.0 SP2.

Keywords
HMI

Entry ID:38051469

Date:2011-07-26

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