Here you can find information to some limitations:

• There are at most 32000 POUs.
• Maximum size of the code of a compiled POU is 64KB
• Maximum number of FB instances 65534 (type does not depend):
• 65533 x PLS + 1 x MYSQL_CONNECT => OK
• 65533 x PLS + 2 x MYSQL_CONNECT => ERROR

Created with the Personal Edition of HelpNDoc: Free Qt Help documentation generator