Components > Communication

It is possible to integrate a browser window using the web browser component. Any web content can be integrated, e.g. Internet pages, IP cameras, etc..

Two browser types can be set. "Chrome" and "Internet Explorer". Depending on the content to be displayed, it may be necessary to switch from the standard browser "Chrome" to "Internet Explorer".

Note: If "Internet Explorer" is set as the browser engine, the component must be selected in the project tree or on the frame to select it.

Data points of the component

Component name	Type	Type Function
Disable operation (display only)	Input	If this input is not used, the component can always be operated. If the input is connected with an On signal, the component cannot be operated. It then only has a display function.
Mouse via	Output	This output can be used to start an event when the mouse is moved over the object.
Reload	Input	The displayed website is reloaded (refreshed) with an On signal.
Page is loaded	Output	Outputs an On signal while a page is being loaded. After the loading process is complete, an Off signal is output.
Visible	Input	The component is switched invisible with an Off signal and visible with an On signal.
Home	Input	The start page (URL) set in the properties is called up with an On signal.
Opacity	Input	See Components independent data points
URL	Bidirectional	The address to be called up is entered as text via this data point. After loading the website, the address of the displayed website is output.
Forward	Input	The next website is called up with an On signal. Only works if a page was previously jumped back.
Zoom factor [%]	Input	The zoom factor (%) of the Internet page is set at this input. The page can be zoomed in and out. The default resolution of 100% is set to 100 (Internet Explorer). For Chrome, the range is 0.5 - 10, where 1.0 = 100% zoom factor.
Back	Input	The last website displayed is called up again with an On signal

Properties of the component

Component name	Standard	Function
Home page	about:blank	Start page (URL) which can be accessed via the "Start page" data point.
URL	about:blank	Page that is loaded directly when the project is started.
Select browser	Chrome	Selection of the browser engine used.

It is possible to set up an automatic login to IP cameras in the web browser in order to display a video image (mjpg stream).

Firstly, the user and password of the network camera must be entered, separated by a colon. This is followed by the IP address at which the camera can be reached on the network, separated by an "@" sign. Finally, the path under which the relevant stream can be accessed must be added.

URL of the video stream (format: http://benutzer:passwort@ip-address/path/)

e.g. http://root:root@192.168.100.14/mjpg/video.mjpg

For cameras with the so-called "server push" method, please ensure that the refresh time of the camera is not set too low. This method is used, for example, with cameras from Mobotix and Panasonic. Here, the entire image from the camera is transferred as a graphic file. This requires a lot of computing power/performance in the system.

Ideally, cameras with the MJPEG process (Motion-JPEG) should be used. These only transfer the image changes, i.e. the amount of data transferred is smaller and therefore the performance is better. As a result, smooth image sequences can be transmitted with little load. This method is used in cameras and web servers from Axis or Santec, for example.

Webbrowser

Webbrowser