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Hello,
I am sorry for writing in english. my german is poor.
I have to make some analysis for uni project. We have a PLC which has a Com. Processor. This is the master on the profibus , and there are two DP slaves. We have a diagnosis software Amprolyzer. It shows all the telegrams happening on the bus. It seems that Master polls the slaves cyclic.My question, is this slave polling interval the same as plc cycle time or what shows actually this slave polling interval ? where does it come from ? Is it possible to see PLC cycle time by looking at the telegram recordings ?
In the PLC program DP Send and Receive blocks is under OB1.
I am sorry for writing in english. my german is poor.
I have to make some analysis for uni project. We have a PLC which has a Com. Processor. This is the master on the profibus , and there are two DP slaves. We have a diagnosis software Amprolyzer. It shows all the telegrams happening on the bus. It seems that Master polls the slaves cyclic.My question, is this slave polling interval the same as plc cycle time or what shows actually this slave polling interval ? where does it come from ? Is it possible to see PLC cycle time by looking at the telegram recordings ?
In the PLC program DP Send and Receive blocks is under OB1.