How to maintain L9_SUB behavior after Control Expert is upgraded from 14.1 to 15.3
L9_SUB function block behavior was changed in v15.0 to be consistent with the description in the online help, but inconsistent with how the function block previously behaved in CE14.1. Customer running CE14.1 with no issue but encountered problem when migrated to CE V15.3.
The proposed workaround solution is to first rename the LL984 folder where CE V15.x is installed (for example add “backup” at the end of the folder name). Then copy and paste the attached LL984 folder to the folder where CE V15.x is installed. Refer to attached documents for more details.
Please note that this is not common practice and the behavior of L9_SUB function block(V14.1) is inconsistent with that in the online help.
Released for: Schneider Electric South Africa
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