Siemens S7-1200 System Manual page 608

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11.4 Accessing the Web pages from a mobile device

In this example, a mobile device that is within range of the local wireless access point can

connect to PLC 3 and PLC 4 by their IP addresses. From the Internet outside the local

wireless range, a mobile device can connect to PLC 1 and PLC 2 using the port forwarded

address for each PLC.

To access the standard Web pages, you must have access to a cellular service or wireless

access point. To access a PLC from the Internet, enter the port forwarded address in the

Web browser of your mobile device to access the PLC, for example http://ww.xx.yy.zz:pppp

or https::/ww.xx.yy.zz:pppp, where ww.xx.yy.zz is the address of the router and pppp is the

port assignment for a specific PLC.

For local access through a local wireless access point, enter the IP address of the CPU:

http://ww.xx.yy.zz or https::/ww.xx.yy.zz. You can also navigate to a specific Web page by

name as described in Accessing the Web pages from a PC (Page 606).

Note that if you choose you can configure the PLC in STEP 7 (Page 603) to be accessible

only by secure access (https).

S7-1200 Programmable controller

System Manual, 03/2014, A5E02486680-AG