'Extras' 'Negate' in LDPermalink

kopsymb_negation (AC500-S PT)

Shortcut: <Ctrl>+<N>

Use this command to negate a contact, a coil, a jump or return instruction, or an input or output of EN POUs at the present cursor position.

⮫ “Cursor positions in the LD editors”

Between the parentheses of the coil or between the straight lines of the contact, a slash will appear ((/) or |/|). If there are jumps, returns, or inputs or outputs of EN POUs, a small circle will appear at the connection, just as in the FBD editor.

⮫ “Coil”

⮫ “Contact”

The coil now writes the negated value of the input connection in the respective Boolean variable. Right at this moment, a negated contact switches the status of the input to the output, if the respective Boolean variable carries the value FALSE.

If a jump or a return is marked, then the input of this jump or return will be negated.

A negation can be canceled through renewed negation.