Logic to turn off one outlet while another is on

Trying to figure out how to turn off my main pump while I am in the middle of a water change.
I have my main pump on outlet S3 and my water change pump on S7
What I would want to do is turn off S3 when S7 is on.

So currently I am using the invert function for timer 3. Which works also works the Stenner dual head pump. So now the main pump cuts off then a water change occurs. This there a logic way to do this also?


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You could use the same programming logic assigned for S7 and S3 and just invert the logic for 1 of them. That way whenever 1 is on the other will be off and vise versa. There is actually a couple of ways to do this through programming logic. Post some pictures of your logic and socket menu. It is kind of hard to help with no information on settings.