Accessing The Web Pages From A Mobile Device - Siemens S7-1200 System Manual

Secure access
Use a secure Virtual Private Network (VPN) to connect to the S7-1200 PLC Web server from
a location outside your protected network. You can use https:// instead of http:// for secure
access to the standard Web pages. When you connect to the S7-1200 with https://, the Web
site encrypts the session with a digital certificate. The Web server transmits the data
securely and it is not accessible for anyone to view. You typically get a security warning that
you can confirm with "Yes" to proceed to the standard Web pages. To avoid the security
warning with each secure access, you can import the Siemens software certificate to your
Web browser (Page 666).
You can also configure the PLC in STEP 7 (Page 603) to be accessible only by secure
access (https) if you choose.
11.4

Accessing the Web pages from a mobile device

To access an S7-1200 from a mobile device, you must connect your PLC to a network that
connects to the Internet or to a local wireless access point. Use a secure Virtual Private
Network (VPN) to connect a mobile device to the S7-1200 PLC Web server. You can use
port forwarding in the wireless router to map the IP address of the PLC to an address by
which a mobile device can access it from the Internet. To configure port forwarding, follow
the instructions for the software configuration of your router. You can connect as many PLCs
and switching devices as your router supports.
Without port forwarding, you can connect to a PLC, but only locally within range of the
wireless signal.
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
11.4 Accessing the Web pages from a mobile device
Web server
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