Coil, when binding to a digital input-output controller controls the state of this output. When using an intermediate relay operates its contacts.
Coil in the diagram is created by dragging from the library elements. While the coil is created without reference.
Bind and rebind of the coil is produced in the following ways:
1. Drag the coil-free digital input / output.
2. Editor block:
The binding is made by double-clicking on the desired input-output controller. The first line of the menu always proposes the creation of an intermediate relay with a first free index. When binding to the input / output controller, contacts of the coil cannot be used. When creating an intermediate relay, the number of contacts the relay is unlimited and they can be used anywhere in the schema after you create an intermediate relay.