====== Alphanumeric Keypad ======

The alphanumeric keypad is a keypad for entering both numbers and letters.  It is a fixed keypad that is always displayed in a static position.

{{ :comfilehmi:alphanumeric_keypad:keypadascii.png?nolink |}}

1. You can enter a specific string through the keypad and write it to a string variable.

2. Define the actions to be processed after completing the keypad input. 

{{ :comfilehmi:alphanumeric_keypad:alphakeypad2.png }}

3. Make detailed settings for the display options and position of the keypad.

4. Check if you want to hide the information being entered with a ''*'' character.

5. If the character string being input exceeds the specified space, the font size is reduced. Enter the font size as a percentage of the normal size. 

{{ :comfilehmi:alphanumeric_keypad:alphakeypad3.png }}

===== Use One Keypad to Edit Multiple Variables =====

The following project illustrates how one could potentially use a single keypad to edit multiple variables.

{{ :comfilehmi:alphanumeric_keypad:keypad_example_1.png }}

{{ :comfilehmi:alphanumeric_keypad:edit_multiple_variables.zip | Download the project}}

There are 4 variables in this project:
  - ''$variable_to_edit''
  - ''$keypad_value''
  - ''$a''
  - ''$b''

When the "Edit Variable $a" button is pressed, ''"a"'' is assigned to ''$variable_to_edit''.  When the "Edit Variable $b" button is pressed, ''"b"'' is assigned to ''$variable_to_edit''.

A condition is created to display the keypad when ''$variable_to_edit'' is either ''"a"'' or ''"b"''

After a value is entered into the keypad, a series of 3 actions are executed
  - If ''$variable_to_edit'' is ''"a"'', then ''$keypad_value'' is assigned to ''$a''
  - If ''$variable_to_edit'' is ''"b"'', then ''$keypad_value'' is assigned to ''$b''
  - Assign nothing to ''$variable_to_edit'' to close the keypad


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