Placement of a Safety Controller in the Project Tree The safety controller is shown as a child node of the corresponding standard controller in the project tree. Exactly one application (here: SafetyA
Objects Below the Safety Controller The safety application with the safety application object ( SafetyApp ) and the safety objects is inserted under the safety controller. Figure 11 . Project tree of
Safety controller Adding the safety controller In the case of the parent/child controller topology, the safety controller is inserted directly below the standard controller or in the fieldbus. This is
Safety Logic The Safety Logic node exists for reasons of symmetry to the standard controller. It identifies the device as a PLC, but has no additional meaning in the safety controller. The Safety Logi
Application (Safety) object The objects relevant for the safety controller and its programming are located below the safety controller. Directly below them is always the symbolic node point Safety Log
Overview of Logical I/Os Principle of the logical I/Os The logical I/Os serve the exchange of data between the standard and safety controllers. Two types of data can be exchanged: global variables and
Usage Types of the Logical I/Os Logical I/O of a Safe Physical Device These logical I/Os are used for the exchange of safety-oriented I/Os between the safety PLC and the standard PLC. The safe field d
