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--- wiki:countnz [2018/07/16 06:28]
admin created
+++ wiki:countnz [2022/07/04 08:39] (current)
admin
@@ Line 1: / Line 1: @@
-====== COUNTNZ() Function ======
+====== COUNTNZ() Function (Count Non-Zero) ======
-The COUNTNZ() function can be used to get the last time a variable was changed - it returns a human readable time.
+The COUNTNZ() function can be used to get the number of minutes a value is greater than a threshold value
 Usage:
-''COUNTNZ(variable, options, val)''
+''COUNTNZ(variable, options, val,[start_hour],[end_hour])''
 **variable** - the variable name to check
@@ Line 12: / Line 12: @@
 **val** - optional - the threshold value to be greater than (0 is the default)
+**start_hour** - option for 'diff in range (option 5) when period is 1 day - start hour (0-23)
+**end_hour** - option for 'diff in range (option 5) when period is 1 day - end hour (0-23) - set start and end to 0 to ignore this
 ===== Generic Variables (per device type) =====
@@ Line 35: / Line 40: @@
 The second parameter, [options] is a number and can be any of the following
-|0 | Returns //No Change// |
+|1 | DAY - Number of minutes non-zero today|
-|1 | DAY - Last time the variable changed during the day |
+|2 | WEEK - Number of minutes non-zero for the week |
-|2 | WEEK - Last time the variable changed during the week |
+|3 | MONTH - Number of minutes non-zero for during the month |
-|3 | MONTH - Last time the variable changed during the month |
+|4 | YEAR - Number of minutes non-zero for during the current year |
-|4 | YEAR - Last time the variable changed during the current year |
+|5 | PERIOD - Number of minutes non-zero for the selected range |
-|5 | PERIOD - Last time the variable changed during the  selected range |
+|6 | SLICE - Number of minutes non-zero for variable changed during the slice in the range (i.e. in a graph segment) |
-|6 | SLICE - Last time the variable changed during the slice in the range (i.e. in a graph segment) |
@@ Line 47: / Line 51: @@
 Get the uptime in percent based on voltage for the day (1440 minutes per day)
-''100*(COUNTNZ('voltage',1)/1440''
+''100*(COUNTNZ('voltage',1)/1440)''
 Possible return values: 0 - 100
+===== Example2 =====
+Get the minutes the DG was running for between 6am and 6 pm (18)
+''(COUNTNZ('DG1_AC_Active_Power',5,0,6,18))''

Wattmon EMS

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