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TOP Server S7 Plus Ethernet Driver - Secure PLC Communication Certificate

How do I export/import the required security certificate for secure PLC communication between TOP Server and a Siemens S7-1500 PLC? 

Requirements: 

  • TOP Server 6.14.263.0 and newer
  • TIA Portal v17 and newer
    • Enabled secure communication 
  • Firmware V2.9.x for S7-1200/1500 PLCs 
  • Base-64 encoded communication certificate

To export certificate: 

  1. Open your TIA Portal project
  2. Browse to the device configuration
  3. Under the General tab go to Protection and Security > Certificate manager 
  4. Right-click on the communication certificate > Export certificate...
  5. Save this certificate in a safe location
  6. Browse for the certificate you just exported and double-click on it
  7. Go to the Details tab > Copy to File...
  8. Follow the Wizard > Select "Base-64 encoded X.509 (.CER)" Format > Next
  9. Give the certificate a name and safe location to save to > Next > Finish

To import certificate: 

  1. Open the TOP Server Administration settings
  2. Go to the Certificate Store Tab
  3. Under Features select "Siemens S7 Plus Ethernet" 
  4. Under Extend Trust Store click on Import
  5. Browse and select the certificate you exported previously (if you encounter "Failed to import certificate" then the certificate was not exported in the correct format)
  6. Click OK and restart the TOP Server Runtime Service.

TOP Server device configuration setting: 

  1. Browse to the device properties > Communications
  2. Under Security > Enable "Secure Communication" & "Require Trusted Certificates" 
  3. Type the PLC Password configured in your TIA Portal project
  4. Apply > OK

 

Please contact us at support@softwaretoolbox.com for any further assistance.