Example: Virtual Keyboard and Virtual Numeric Keypad
Product: CODESYS Visualization
The example describes how a virtual keyboard or a virtual numeric keypad for user input can be integrated into any visualization.
Description
As a substitute for real input devices, visualizations representing the keyboard and numeric keypad and allowing user input using a mouse or a touch screen can be integrated into your application.
Additional information
PLC_PRG: Program where the variables for user input are declared. It is accessed in write mode when user input is done using the virtual keyboard or the virtual numeric keypad.
Visualization: The visualization consists of three fields. The fields have an input configuration which responds to an "OnMouseClick" event. The input variables are passed there.
Runtime behavior: When one of the fields is clicked, either a numeric keypad or a keyboard is displayed.
A numeric keypad is displayed in the first field, allowing the entry of integer values within an upper and lower limit.
A numeric keypad for entering numbers in floating point format is displayed in the second field.
In the third field, a keyboard is displayed for entering letters and texts which are written to a string variable.
Tip
The input configuration of a visualization element is displayed in the Properties view under Input configuration .
System requirements and restrictions
Programming system | CODESYS Development System (version 3.5.14.0 or higher) |
Runtime system | CODESYS Control Win (version 3.5.14.0) |
Add-on components | - |
Note
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