FC and FB blocks may be referred to as in ob1. Please note that ob1 is automatically called. Check this step by step guide to call ob1 in tia portal.
2- Ob1 opens.
3- Choose bloc_1.
4- Drag and drop block_1 into community 1 of ob1.
Do the equal for all fc and fb blocks. Comments below if you have anything to ask.
SIEMENS PLC PROGRAMMING BLOG
Learn Siemens PLC Programming with practical experiences, helpful tutorials and with useful examples in this Siemens PLC programming blog.
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