Hello everybody,

I´m using a SCL routine in STEP7 to create a DB with an ARRAY of INT, and in this same DB I have already choosed the initial value of the ARRAY components. In this same SCL source object I created a FC that receives two values(REAL),convert them to INT, and compare them with the ARRAY index for finding the correspondent integer that is stored in the ARRAY. When I compile the SCL source, it doesn´t show any errors, but when I call this FC in my OB1, that I wrote in LADDER, and try to go online(via PLCSIM), the CPU goes to STOP and I get the following messages when I go to Diagnostic Buffer: “Stop Caused By Programming Error(OB not loaded or not possible, or no FRB)” and “Area Length error when reading(Global DB, word access, access address 50, FC number 8, Module address 82, Requested OB: Programming error OB(OB121)”. I tried to put the OB 121 in my project, and the CPU doesn´t went to STOP in Online mode, but my FUNCTION was not working. When I went to the menu “Help on event” I saw this: “The value addressed using the access address is outside or not completely within the permitted address range (the range varies depending on the particular CPU).”

I´d like to know how can I solve this problem and get my Function running ok since my SCL code doesn´t show any programming errors(according to the compiler).

Thank you for your attention.

Hi, mmcneto.

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