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samplestream:lc_amount [2024/04/23 22:13]
optrix 		samplestream:lc_amount [2024/04/25 23:43] (current)
optrix
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 ===Description=== ===Description===
  
-This function is used to calculate a [[lagged time]] based on a //counter//. +This function is used to calculate a [[data-driven lag|data-driven lag time]] based on a //counter//. 
  
-Use this if the source of your lag is being **counted** or **totalised** instead of being measured as a **rate**. Note that in many industrial applications, field-based counters or totalisers are more accurate that performing calculations on rates.+Use this if the source of your lag is being **counted** or **totalised** instead of being measured as a **rate**. Note that in many industrial applications, field-based counters or totalisers are more accurate than performing calculations on rates.
  
 For example, you might have a conveyor system measuring how many meters you've moved. If Sensor X is 50m away from Sensor Y, you can calculate the //time lag// between Y and X by going backwards and finding out how long it took for 50m of conveyor to pass. For example, you might have a conveyor system measuring how many meters you've moved. If Sensor X is 50m away from Sensor Y, you can calculate the //time lag// between Y and X by going backwards and finding out how long it took for 50m of conveyor to pass.
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 |query|string|The AQL Query to send| |query|string|The AQL Query to send|
 |amount|float|The amount to lag the time by| |amount|float|The amount to lag the time by|
-|origin|datetime|The ending/reference time|+|origin|datetime|The ending/reference time (default=now)|
 |seconds|int|The maximum number of seconds to search (default=1 day)| |seconds|int|The maximum number of seconds to search (default=1 day)|
-|expected|int|The average amount of time in normal operation|+|expected|int|The average amount of time in normal operation (default=10 minutes)|
  
 ===Returns=== ===Returns===
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 <code python> <code python>
     srv = ardiapi.Server('demo.optrix.com.au/s/pl')     srv = ardiapi.Server('demo.optrix.com.au/s/pl')
-    query = "'Paint Line' ASSET 'Distance' PROPERTY VALUES"+
     lc = samplestream.LagCorrection()     lc = samplestream.LagCorrection()
-    diff = lc.Amount(srv,query,25)+    diff = lc.Amount(srv,"'Paint Line' ASSET 'Distance' PROPERTY VALUES",25) 
     print("Roller 2 Lag Correction - " + str(dt))     print("Roller 2 Lag Correction - " + str(dt))
  </code>  </code>

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