Thank you for the reply. can you give me an example plz.
I need the action is repeat every few minutes all day . some how is explain in the block. Thank you again.!

Block Name : Once per minutes
This block can pass once in a certain period of minutes. It uses the server time and counting of minutes starts from 00:00 at the day when the program is started. The block passes initially.For example, if you have 20 minutes period, then the block can pass between:

• 00:00 and 00:20
• 00:20 and 00:40
• 00:40 and 01:00
• 01:00 and 01:20... and so on.But if you use period that can't fit into an hour, then you can get shifted signals.

Hello everyone...
can someone help me with this part i did not understand what it means with an example. thank you

Let's say you use 7 minutes period, then the block can pass between:

• 00:00 and 00:07
• 00:07 and 00:14...
• 00:49 and 00:56
• 00:56 and 01:03
  So, it's better to use periods that follows the next condition:1440 / period = whole number(1440 is the number of minutes in 1 day)