How to deal with arrays ?

[ayone0518]

Hello,
I have questions about arrays to pass to ST programs and FBD programs.

1. how to declare arrays on MervisIDE, such as MyVariables ARRAY[0..10] on INT ? I do not see any array related type in pull downs.
2. according to my case, Mervis has specific array type of int, MultiIoInt data type. Are you supposed me to use this type when I want use array of integer ?

thank you.

[Martin Kudláček]

Hello @ayone0518,

1. You almost got it right. The definition is this:

VAR
   my_array: ARRAY[0..10] OF INT;
   my_prefilled_array: ARRAY[0..2] OF REAL := [ 1.123, 2.345, 3.456 ];
END_VAR

2. Since this is the first time I hear of this then no, use the standard ST definition :-)

Best regards,
Martin

[ayone0518]

Thank you Martin.
I have one more question.
Can I declare array as local variable on Mervis FBD UI ?
It seems I can't do this on it.

[Martin Kudláček]

Hello @ayone0518,
no, the arrays cannot be defined in FBD.

Best regards,
Martin