Specifications
70
Introduction
The conguration phase uses all elements described in chapter 4.
Unity program
The UNITY program comprises several sections, some of witch perform a transversal role such as PLC system
monitoring or the process sequence coordination.
PLC system monitoring manages the system state b (alarms, status, communication...).
Processes sequences coordinate the process functions, and link whole functional units: b
Init section: Coordinates the init sequence of all starters. v
Sequence section: Manages the sequence process inside the functional unit. This section is linked to process v
section
Starter section: Allows direct management of the starters from the SCADA or HMI to starter working modes. v
In these sections the DFBs are in accordance with the starter type being managed. In the application, a section is
dedicated to one starter. In case of a signicant number of motors, it is easier to put all motor function units
together.
Implementation
Water application example
Conguration
See example 1 page 71
See example 2 page 71
See example 3 page 72