MycheckLib with AS2.7

[tullio.quirini1 (Tullio Quirini)]

Good evening,
inside my old project made with AS2.7 there is a library called MyCheck.. As far as i’ve understood this library it is equal to IEC_CHECK_LIBRARY (on AS 4.) … Am i right?
For a strange reason, this library isn’t compatible with my actual version of Sys_lib and after remove then i’m able to build the project. I didn’t remember the story of this project so i want to ask if you know where i could took this library ? is it an official library?

[alexander.hefner]

Hi,
I can remember the name “MyCheck” as the library name of a wrapper library that called some check functions like CheckBounds() and so on.
I can’t remember if “MyCheck” was part of Automation Studio 2.x, maybe as a library sample how to call those check functions.

So or so, in Automation Studio 4 you can import the Library IECCheck, wich also should already include some of the check calls (I can’t remember if all are included, don’t think so).

You can have a look in an excellent thread for some details of IecCheck:

Troubleshooting Page Faults

1 Overview 1.1 What is a page fault? The processor throws an exception to the operating system if it tries to access an invalid or protected memory location. The B&R operating system logs this type of serious memory violation as a page fault (error 25314). 1.2 What can cause a page fault? Processor memory can become invalid as a result of programming errors such as: Null or incorrect pointer Division by zero Accessing an index of an array which does not exist (i.e. the 11th element of a 10 el…

And here in the Automation Help:

B&R Online Help

Best regards!

[tullio.quirini1 (Tullio Quirini)]

@alexander.hefner

ve a look in an excellent thread for some details of IecChec

Thanks for your answer . I have seen the thread..it is very interesting and detailed thred..Based on my problem, do you think is a good way to recreate my own library in AS 2.x that contain Unbound etc.. function? (like AdvIecCheck)?

[alexander.hefner]

Hi,

yes I think it should possible to recreate it.
If you still use AS2.7, additionally I would check if “MyCheck” was possibly included in the library samples of AS (I’m relatively sure that it wasn’t a standard library, but maybe a sample delivered with AS).

I just want to mention that from a functional point of view the library normally isn’t neccessary - I used it in past for bug hunting in the development phase of projects, but as the functions consume a remarkable amount of computing time, I removed it when the project was finished.

Best regards!