However, I am finding that it is running every minute. Of course, the conditions are false so the actions don't actually run. But I only expected this rule to trigger every 15 minutes. Am I misunderstanding the periodic trigger?
I had thought about that too and can certainly implement action conditions. But in that case, the trigger would still fire every 15 minutes all day long, and the action would cancel when the condition not met. I thought it would be cleaner to only have the trigger fire when it is supposed to, rather than all day long. Nonetheless.....I'm still unclear why what I created does not work as I intended. Each of these hours (1:00, 2:00, etc.) at 15 minutes after the hour...shouldn't that trigger only at 1:15, 2:15, etc? Logs show it triggering every minute.
I agree, I don't see why it should run every minute, but I don't think having a trigger every 15 minutes that doesn't really do anything should cause you any issues.