The Auto Mode Framework
The PLC Pro establishes Auto Mode only in response to a deliberate operator request that is permitted by the control program and defines the conditions that cause Auto Mode to be exited. While Auto Mode is active, installation actions are placed under program direction and use the equipment-level functions and Current-State feedback developed and verified during Manual Mode. Automatic operations may initiate and/or resume as their required conditions and any required operator intent are satisfied. To implement this operating mode, the PLC Pro will:
Define Entry Into and Exit From Auto Mode
Entry into Auto Mode must be deliberately requested by the operator and permitted by the control program. The request is accepted only when the control program determines that the installation is ready to place its actions under automatic program direction.
The PLC Pro also defines the conditions required to remain in Auto Mode. The operator may deliberately cancel Auto Mode, and the control program exits it when a condition required to remain in Auto Mode is lost.
Place Installation Actions Under Program Direction
Installations are equipped with an Auto Mode so that operators don't have to spend their days commanding individual machine actions. When Auto Mode becomes active, the control program assumes direction of the installation activity required to perform the assigned work. It determines which equipment functions are required and coordinates the timing and use of the machine resources needed to carry them out.
Build Automatic Operation from Proven Equipment-Level Functions
Operations in Auto Mode use the equipment-level functions and Current-State feedback developed and verified during the development of Manual Mode. Automatic logic determines when those proven functions are requested. The equipment-level control continues to determine how each requested action is carried out.
Define How Automatic Operation Begins or Resumes
Some automatic operations may begin or resume immediately when Auto Mode is established. Other automatic operations may require additional operator action before beginning or resuming. In either case, each operation proceeds only when its required operating conditions are satisfied and any required operator intent has been established. PLC Pro Sequencing provides the structure used to evaluate those requirements consistently before automatic operation begins, resumes, or continues.
Organize Automatic Operation Around Defined Sequences of Operation
PLC Pro Methods organize automatic operation around defined sequences of operation. PLC Pro Sequencing is the core of PLC Pro automatic-operation methods, providing the structure that makes complex machine behavior orderly, understandable, and repeatable.