Echelon LonPoint Application and Plug-In Uživatelský manuál stáhnout pdf (Strana 131)

The LonPoint Application and Plug-in Guide 10-29

Defining the State Machine

The Edit State Machine tab, shown in the following figure, allows you to define

the state names and transitions for the State Machine functional block.

The Current State field is used to enter new state names, and to select a state to

define. The state table, contained in the

Define Transitions from the

Current State frame, allows you to define the state transitions from the state

selected in the

Enter or Select State field. The state table contains 3

columns. The first,

Exit Condition, allows you to list the conditions, created

in this tab and defined in the

Edit Conditions tab, that will cause the state

machine to change states from the selected state. Select the conditions from the

Exit Conditions list. Each condition may only be used once in the table for

an individual state. When the specified exit condition evaluates to True, the

state machine will read the other two columns in the row. The

Next State

column determines what state the machine will be put into when the given

condition is True. The

Mode_Out column determines what mode value will be

sent to the Mode_Out network variable of the State Machine functional block

when the exit condition is true. The

Digital Outputs for Selected Row

list determines what values will be sent to each of the scheduler’s digital outputs

when the exit condition evaluates as true.

To define the state and exit condition names, follow these steps:

Select the Edit State Machine tab.

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Echelon LonPoint Application and Plug-In Uživatelský manuál Strana 131