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Entry type: FAQ Entry ID: 38717202, Entry date: 06/22/2018
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Why is communication between the Runtime simulation and the S7-1200/S7-1500 not possible if the PG/PC interface is not set correctly?

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  • Associated product(s)
The setting in the PG/PC interface must match the proper TCP/IP interface.

Description
If the setting in the PG/PC interface does not match the proper TCP/IP interface, communication between the Runtime simulation (simulation of the HMI panel) and the S7-1200/S7-1500 is not possible. All functions like "Download to CPU" and "Determine status online" work, but the Runtime simulation cannot set up a connection to the controller. Please also refer here to the relevant information in the STEP 7 Basic Online Help under "Simulating projects".

We recommend the following procedure as a remedy: 

  1. In the Control Panel, you open the "Set PG/PC Interface" dialog.
  2. Under "Access Point of the Application", select "S7ONLINE (STEP 7)" from the drop-down list.
  3. Under "Interface Parameter Assignment Used", mark the interface "Broadcom NetXtreme Gigabit Ethernet TCPIP.Auto" that is connected directly with the device.


    Fig. 1
     
  4. Then click on OK and also confirm the next message with OK.
     

The Entry ID: 11870489 provides more information on parameterizing the PG/PC interface and on the following topics:

  • Adding and installing more interfaces.
  • With or without automatic recognition of bus parameters.
  • Device driver cannot be selected or is not visible.

Note
The "TCP/IP(Auto)" setting in the PG/PC interface cannot be set in administrated networks if address assignment is via DHCP (Dynamic Host Configuration Protocol). The procedure for assigning the IP address from a DHCP server is given in the STEP 7 (TIA Portal) Online Help under "Call the address via "Accessible Nodes".

Creation Environment
The screens in this FAQ response were created with MS Windows 7.

 

Security information
In order to protect technical infrastructures, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art IT security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about cyber security, please visit
https://www.siemens.com/cybersecurity#Ouraspiration.