EVENT order of execution...

[brian_sadler]

Hi,

I have an application which has 3 MOTION DETECTORS to turn on a light, so I create an EVENT and use IF, OR IF, OR IF to set up the MOTION DETECTORS to turn on the light. Of course, I don't want them coming on in the daylight, so I have an AND IF at the end to only enable the MOTION DETECTORS at night.

In normal programming I would use parentheses to force an order/precendence of execution, (a + b + c) . d.

How do I achieve this without resorting to a script ?

Regards,
BRIAN

[Wade]

Each IF and OR IF trigger needs a separate AND IF condition.

[brian_sadler]

Each IF and OR IF trigger needs a separate AND IF condition.

Wade,

Thanks for the reply. I should have suspected that. Guess it's time to bite the bullet and get scripting !

Regards,
BRIAN

[Roger D]

Greetings brian_sadler,

Try this out...



So to answer your question on ordering, I believe this is how it is treated.

IF (M1 + bNighttime) or (M2 + bNighttime) or (M3 + bNighttime) = True, Then Do Something.


Note: (Motion_1 AND bNighttime) ≠ (bNighttime AND Motion_1)

Be safe!

Roger

[Guest]

Check out the "Event Clinic" for a more complete explanation on how events work.

https://forums.homeseer.com/forum/ho...3-event-clinic

Even though it was written for HS3, it still applies to HS4.

[brian_sadler]

Greetings brian_sadler,

Try this out...



So to answer your question on ordering, I believe this is how it is treated.

IF (M1 + bNighttime) or (M2 + bNighttime) or (M3 + bNighttime) = True, Then Do Something.


Note: (Motion_1 AND bNighttime) ≠ (bNighttime AND Motion_1)

Be safe!

Roger

Roger,

Thanks for the explanation.

Did you mean:
IF (M1 . bNighttime) + (M2 . bNighttime) + (M3 . bNighttime) = True, Then Do Something, where "+" is OR and "." is AND ?

I think the in-line code is OK and I'll give that a try

I don't understand why "A and B", (A . B) is not the same as "B and A", (B . A). Another mystery to add to the big list

Regards,
BRIAN

[brian_sadler]

Check out the "Event Clinic" for a more complete explanation on how events work.

https://forums.homeseer.com/forum/ho...3-event-clinic

Even though it was written for HS3, it still applies to HS4.

David,

Thanks for the reference.

Regards,
BRIAN (AI6MK)

[Roger D]

Brian,

"where "+" is OR and "." is AND" Yes, that is correct.

---

As far as (Motion_1 AND bNighttime) ≠ (bNighttime AND Motion_1)…

When used in the design of an "AND IF" Event, "Motion_1" is a "Trigger" and bNighttime is a "Condition." In other words,

The "Condition" must already be True before the "Trigger" can fire.

  Trigger      Condition
    🠗           🠗
(Motion_1 AND bNighttime) = Nighttime has to be active before motion can turn on the lights. ✔

(bNighttime AND Motion_1} = Motion has to be active before nighttime can turn on the lights. ❌


Hope this helps,

Roger D

[brian_sadler]

Brian,

"where "+" is OR and "." is AND" Yes, that is correct.

---

As far as (Motion_1 AND bNighttime) ≠ (bNighttime AND Motion_1)…

When used in the design of an "AND IF" Event, "Motion_1" is a "Trigger" and bNighttime is a "Condition." In other words,

The "Condition" must already be True before the "Trigger" can fire.

  Trigger      Condition
    🠗           🠗
(Motion_1 AND bNighttime) = Nighttime has to be active before motion can turn on the lights. ✔

(bNighttime AND Motion_1} = Motion has to be active before nighttime can turn on the lights. ❌


Hope this helps,

Roger D

Roger,
Thanks very much with the follow up. Yes that clears it up. Of course in boolean arithmetic there is no sense of TRIGGER and CONDITION.
Scratch one off the big list...it's a good day !
Regards,
BRIAN