FB event run

[Daniel]

Sure you can have 1 timer to trigger all blocks. In this case you will create one resident script which will run every 5 sec. In this case make sure you set delta on output to send values on change of value only. Otherwise you will send every 5s from every block which is not nice to KNX load. You can also un-select 'write to bus' which will not write to TP but only when you can.
It is much better to use event way as then logic is used only when it is needed.