Echelon LonPoint Application and Plug-In - Manual (Page 107)

The LonPoint Application and Plug-in Guide 10-5
Types of Schedules
The State Machine functional block can be used to implement two types of
schedules – a digital output schedule and a state output schedule.
When using a digital output schedule, the digital outputs from the State
Machine functional block are controlled directly by the Event_Out output from
the Event Scheduler functional block. This type of schedule is useful for
schedules that are strictly based on time of day, since the complexity of defining
a state machine is eliminated.
When using a state output schedule, the state machine controls the digital
outputs. This type of schedule is more complex to define, but allows the digital
outputs to be controlled by combinations of time of day inputs as well as inputs
from other digital and analog devices, as well as other LonPoint SCH-10
modules.
Overview of the Supervisory Application Development
Process
Supervisory applications for the SCH-10 module should be designed in a
LonMaker drawing before using the LonPoint Schedule Maker utility to define,
download, and simulate the design. This simplifies the generation of as-built
reports for the schedule design and significantly reduces engineering time.
A Schedule design stencil is included in the LonWorks LonMaker\Visio folder
when the LonMaker software is installed. This stencil includes shapes that can
be used to design a supervisory application within your LonMaker drawing.
Open the LonMaker File menu, point to Stencils, then click Open Stencil or
click the Open Stencil ( ) button on your drawing to open this stencil in your
drawing. These shapes do not effect the function of the LonMaker network they
are placed in. Place these shapes in a separate subsystem to document your
schedule design within the network drawing.
To develop a supervisory application for a LonPoint SCH-10 module, follow these
steps:
1. Define the sequence of operations
2. Create an event schedule design.
3. Create a state machine design.
4. Configure the Real-Time Clock functional block.
5. Configure the Event Scheduler functional block.
6. Configure the State Machine functional block.
7. Simulate the supervisory application design.
8. Download the design to an SCH-10 module.
9. Test the design in the SCH-10 module.