Web server
12.7 User-defined Web pages
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1063
Example of a user-defined web page
12.7.9.1
Web page for monitoring and controlling a wind turbine
As an example of a user-defined Web page, consider a Web page that is used to remotely
monitor and control a wind turbine:
In this application, each wind turbine in a wind turbine farm is equipped with an S7-1200 for
control of the turbine. Within the STEP 7 program, each wind turbine has a data block with
data specific to that wind turbine.
The user-defined Web page provides remote turbine access from a PC. A user can connect
to standard web pages of the CPU of a particular wind turbine and access the user-defined
"Remote Wind Turbine Monitor" Web page to see the data for that turbine. A user with
privileges to modify variables can also put the turbine in manual mode and control the
variables for turbine speed, yaw, and pitch from the Web page. A user with privileges to
modify variables can also set a braking value regardless of whether the turbine is under
manual or automatic control.
The STEP 7 program would check the Boolean values for overriding automatic control, and if
set, would use the user-entered values for turbine speed, yaw, and pitch. Otherwise, the
program would ignore these values.
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