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hour counter

Created by: electric123 at: 11/2/2009 12:09 PM (2 Replies)

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11/2/2009 12:09 PM	Rate (0)
electric123 Posts: 8 Rating: (0)	Hi How can i create an operating hour counter for a pump in order to maintenance.i coudnt find any block for this perpose. Thanks a lot.
electric123 Posts: 8 Rating: (0)	Last edited by: amin123 at: 11/2/2009 12:13 PM Last edited by: amin123 at: 11/2/2009 12:10 PM
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11/3/2009 6:44 AM	Rate (0)
Aret Posts: 2348 Rating: (259)	There are a lot of methods, one of the simpliest is using OB1_PREV_CYCLE variable (temp variable in OB1) A #Pump_works JCN notw L #Stored_time // DINT type (or TIME type, which is the same) L #OB1_PREV_CYCLE +D T #Stored_time // Your time contains working time in ms. If you divide it by 3600*1000 - you get hours notw:NOP 0 .... Please mention - it would have some inaccuracy, but think it doesn't matter for such a task. Also you can just configure OB3x with similar code. To be more precise - use SFC64 in similar way or store starting time by means of SFC1 on starting pump, do it again on stopping and compute the difference (in this case you have to worry about syncronization).
Aret Posts: 2348 Rating: (259)	Last edited by: Aret at: 11/3/2009 6:48 AM
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This contribution was helpful to 1 thankful Users electric123

11/3/2009 8:59 AM	Rate (0)
uel123 Gold Member Joined: 1/29/2006 Last visit: 5/28/2023 Posts: 438 Rating: (63)	Hey, Amin! See this discussion: /tf/WW/en/Posts/29422 have fun! uel123

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This contribution was helpful to 1 thankful Users electric123

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