dixell iPRO - Page 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;