IDE Documentation ... Reference documentation Creating the application Creating application in LD-editor Actions within LD-editor Creating the ladder diagram The LD-editor provides the following actions to create the ladder diagram : Declaring variables in LD and assigning a variable to contact/coil Creating elements in a rung (with new link element or an And/Or link) Entering an expression for an input/output for a function or function block Assigning an existing variable to a contact or coil Reconnect existing link elements Saving ladder diagram Closing LD-editor