System parameters accessible as variables

[larryllix]

Time and date variables would simplify repetitive schedule things, almost as well or as an alternative to wildcards.

Many tasks would become much simpler to programme with. e.g. Time accumulation trackers and date scheduled triggers, fan cyclers, etc. without loading the CPU and progarmming space with constant wait or repeat timers.

$sys.year

$sys.month

$sys.date

$sys.day

$sys.hour

$sys.minute

$sys.second

$sys.alive.time (2^31 seconds <= 68 years since last boot)

$sys.DST

$sys.kWh.price

$sys.kW.active.total

$sys.kWh.cumulative (resettable)

[Michel Kohanim]

Hi larryllix,

 

Can you please give me an example of where this would be used in a program?

 

With kind regards,

Michel

[MWareman]

One I can think of quickly...

 

If $sys.month = 12

And $sys.date = 25

Then

Program.ChristmasDay.RunThen

 

..or something like that..

[larryllix]

Regular time based events would stay more accurate than repeat loops

------------------------------

If
   $sys.minute = 0
 OR
   $sys.minute = 30
Then
   set 'chime' on

If
    $sys.month is not $current_month
Then
    $current_month = $sys.month
    $current_month  init to  $current_month
    $YearlyTotal      += $MonthlyTotal
    $MonthlyFanCost = MonthlyTotal
    $MonthlyTotal      = 0
    $MonthlyFanCost *= 32
    $MonthlyFanCost *= $sys.kWh.baseprice
    $MonthlyFanCost  /= 100
     Run Program 'Reset Fan Time Counter'  (If)
     Send Notification  to 'Text Larry' content  'It's a new month! Change the water filter!'

Measuring usage time

-------------------------

If
   control 'Furnace Fan' is switched On
Then 
    $TimeOn = $sys.hour
    $TimeOn *= 60
    $TimeOn += $sys.minute
Else
    $TimeOff = $sys.hour
    $TimeOff *= 60
    $TimeOff += $sys.minute
    $TimeRun = $TimeOff
    $TimeRun -= $TimeOn
     Run Program 'Past Midnight'  (If)
     Wait 15 seconds
    $TimeTotal += $TimeOn

I am not sure what the intent of the Power database information in ISY is

If
       $sys.kW.active.total >= 10000
   AND
       From 9:00 AM
       To     3:00 PM (same day)
Then
    Run Program 'TOU devices cutback' (if)

Logging events

-----------------

If 
    Control 'Doorbell' is switched On
Then
    $LastTime = $sys.month
    $LastTime *= 100
    $LastTime += $sys.date
    $LastTime *= 100
    $LastTime += $sys.hour
    $LastTime *= 100
    $LastTime += $sys.minute
    $LastTime *= 100
    $LastTime += $sys.second

[larryllix]

If
   $sys.alive.time = 15
Then
   Send Notification 'email CAI'  Content   'OK I am initialised  - resend initialisation data'
   Send Notification 'eMail Larry'  Content   'ISY rebooted - possible power failure at home'

 

If
   $sys.alive.time = 300
Then
    Run Program 'GridSwitch sync and close' (if)
    Set 'Utility Room / CoGen' Off
    Send Notification 'eMail Larry'  Content   'House power back on grid - grid stable for 5 minutes'