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TOPIC: Implement a history module in proview

Re: Implement a history module in proview 12 years 2 months ago #3200

  • jagspaul
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Hi Claes

I edited plc program and rebuild it and plc trace opening problem is solved.
But still I have question, Why it is working without SevNodeConfig object?



regards
jags
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Re: Implement a history module in proview 12 years 2 months ago #3201

  • claes
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Hi Jags,

A SevNodeConfig object configures a storage station, ie a node where only the sev_server process and the communcation server rt_qcom is started, not Proview runtime. But you can also start the sev_server process together with Proview runtime by configuring a SevServer object in the node hierarchy. In this case the node is already configured as an ordinary process station with a NodeConfig object, and you should not use a SevNodeConfig.

/Claes
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Re: Implement a history module in proview 12 years 2 months ago #3202

  • jagspaul
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Hi Claes,

Now I got it.

Now tell me how to plot multiple tags (storage server) on single graph.

What is the format and maximum value of StorageTime attribute of SevHist.
0:00:00:00.00 = ?????

What will be the value of StorageTime attribute if I want to store data for 1 year old.

thanks
jags
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Re: Implement a history module in proview 12 years 2 months ago #3203

  • claes
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Hi,

Use the PlotGroup object to show several curves.

I think the upper limit is about 67 years, but it might work to 134 years.

The data type is a delta time which has the format d h:m:s so one year would be

365 0:0:0

/Claes
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