Emerson iPro SERIES Instrukcja Użytkownika Pobierz pdf (Strona 57)

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1592025400 – Vers. 1.0 - 57 -

• STRING

ASSIGNMENT

:= direct copy

CONCATENATION

+ concatenates two strings

COMPARISON

=, <>, >=, <=, >, < alphabetical order

• CONVERSION FUNCTION

ANY_TO_BOOL conversion to boolean

ANY_TO_DINT conversion to double INT

ANY_TO_REAL conversion to real

ANY_TO_TIME conversion to timer

ANY_TO_STRING conversion to string

Example:

If we have two variables: SEC (type DINT) and SEC1 (type TIME) the assignation:

SEC1 := SEC; this is wrong

SEC1 := ANY_TO_TIME (SEC*1000); this is correct

• FUNCTION BLOCK CALLING

Declare instance into dictionary (each instance have a unique name)

TON_Instance1 is an instance of TON

Call instance of the FB (activation of instance by-passing the input parameters)

TON_Instance1 ( TRUE, t#3s)

Get the returning parameters

End_Time := TON_instance1.Q;

Current_Time := TON_instance1.ET;

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Emerson iPro SERIES Instrukcja Użytkownika Strona 57