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Element: Contact

Symbol:

_c4ld_icon_toolbar_contact

Shortcut: K

Function: Inserts a new contact at the insert position

Call: Context menu in the LD editor

Requirement: A valid insert position is selected.

In the element bar, click the symbol. Then drag the cursor to the editor in order to display the possible insert positions. Drag the cursor to the desired insert position. When the insert position is valid, the cursor will show a plus sign. Release the mouse button there. Alternatively, you could also first click the symbol and then click the desired insert symbol in the editor. 

A Boolean variable will be assigned to each contact. The contact passes its TRUE or FALSE signal from left to right.

You arrange the contacts in a series or in parallel:

  • Contacts connected in a series are AND-ed: All contacts must be TRUE.

  • Contacts connected in parallel are OR-ed: One contact with TRUE is sufficient.

A negated contact passes TRUE when the variable value is FALSE.

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