Quirky M1KP Temperature Values

[nirias]

I need help displaying the high and low values for temperature as measured at a ELK-M1KP keypad. I have logic that does this very reliably for zone temperatures measured with ELK-M1ZTS sensors but the keypad temperatures have been very quirky:

1) If the temperature is saved to a counter, the counter is the measured temperature plus 40 degrees
2) If the current temperature is compared to a counter, the results are erratic, with 1-2 degrees worth of instability.

Using the rules below, it is not unusual for the low value to wind up higher than the high value. The same logic (without the 40 degree offset for display) works perfectly with my ELK-M1ZTS zone temperatures.

Is there some trick I am missing? Thanks for any suggested solutions.

Nick




I use the following rules to update hi and lo values for the keypad sensor

WHENEVER EVERY 1 MINUTE
AND Dining Room (KP 1) ACTUAL TEMPERATURE IS LESS THAN DR Lo (Counter 6)
THEN SET DR Lo (Counter 6) TO TEMPERATURE OF Dining Room (KP 1)

WHENEVER EVERY 1 MINUTE
AND Dining Room (KP 1) ACTUAL TEMPERATURE IS GREATER THAN DR Hi (Counter 5)
THEN SET DR Hi (Counter 5) TO TEMPERATURE OF Dining Room (KP 1)


I use the following rules to display hi and lo values for that sensor


WHENEVER KEY F5 ON KEYPAD1 ACTIVATES
AND F5Context (Counter 64) IS EQUAL TO 1
THEN SUBTRACT 40 FROM DR Lo (Counter 6)
THEN DISPLAY "Local lo % CTR6 % F" IN House (Area 1) FOR 30 SECONDS, [*] CLEARS
THEN ADD 40 TO DR Lo (Counter 6)
THEN SET F5 Context (Counter 64) TO 2


WHENEVER KEY F5 ON KEYPAD1 ACTIVATES
AND F5Context (Counter 64) IS EQUAL TO 0
THEN SUBTRACT 40 FROM DR Hi (Counter 5)
THEN DISPLAY "Local hi % CTR5 % F" IN House (Area 1) FOR 30 SECONDS, [*] CLEARS
THEN ADD 40 TO DR Hi (Counter 5)
THEN SET F5 Context (Counter 64) TO 1

WHENEVER KEY F5 ON KEYPAD1 ACTIVATES
AND F5Context (Counter 64) IS EQUAL TO 2
THEN SET F5 Context (Counter 64) TO 0


Note: there are additional rules to reset the high and low and context counters at midnight and at system startup

 

[mikeweber3]

Nirias,

I'm not sure I understand the objective of adding and subtracting 40 degrees. What is your overall objective?

 

[nirias]

Overall objective is to capture the high and low temperatures of the day.

I'm using counters and the 40 degree offset is the quirk I am reporting. If the keypad temp is currently 70 degrees and is saved to a counter, the counter value goes to 110. So if you want to later display the high or low temperature, you will be displaying a number that is 40 degrees high unless you first subtract 40.