Siemens SIMATIC S7-1200 System Manual page 1064

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12.7 User-defined Web pages

This user-defined Web page example consists of three files:

● Wind_turbine.html: This is the HTML page that implements the display shown above,

using AWP commands to access controller data.

● Wind_turbine.css: This is the cascading style sheet that contains formatting styles for the

HTML page. Use of a cascading style sheet is optional, but it can simplify the HTML page

development.

● Wind_turbine.jpg: This is the background image that the HTML page uses. Use of images

in user-defined Web pages is, of course, optional, and does require additional space in

These files are not provided with your installation, but are described as an example.

Implementation

The HTML page uses AWP commands to read values from the PLC (Page 1044) for the

display fields and to write values to the PLC (Page 1045) for data coming from user input.

This page also uses AWP commands for enum type definition (Page 1050) and reference

(Page 1051) for handling ON/OFF settings.

The first part of the page displays a header line that includes the wind turbine number.

The next part of the page displays atmospheric

conditions at the wind turbine. I/O at the turbine

site provide the wind speed, wind direction, and

current temperature.

Next, the page displays the power output of the

turbine as read from the S7-1200.

The following sections allow for manual control of the turbine, overriding the normal automat-

ic control by the S7-1200. These types are as follows:

• Manual override: enables manual override

of the turbine. The STEP 7 user program

requires that the manual override setting be

true before enabling the use of any of the

manual settings for turbine speed, or yaw or

• Yaw override: enables manual override of

the yaw setting, and a manual setting for the

yaw. The STEP 7 user program requires

that both manual override and yaw override

be true in order to apply the yaw setting.

• Pitch override: enables manual override of

the pitch of the blades. The STEP 7 user

program requires that both manual override

and pitch override be true in order to apply

the blade pitch setting.

S7-1200 Programmable controller

System Manual, V4.2, 09/2016, A5E02486680-AK

Siemens SIMATIC S7-1200 System Manual page 1064

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