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Communication / Networks: Do I Require Fieldbus protocol Dp repeater/terminater Intended For Simocode Pro C/v system?

Hi,
Now I'm workingin the project that will have about200 simocode pro.Vconnect to PLC via Profibus DP network. So we designed to seperate network to two profibus lines. All simocode will be installed in one room so the network length <100 meter. My question is, do i need repeater and terminator in this case? I try to test with about 20 module and it's ok without those device.
I have to use CP443-5ext for another bus. Do I have to do something about send/receive in PLC program? Or i can directly address I/O according to hardware configuration?
Thank you.

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