Is it possible to use DP840 with AC450?
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DP840 is not supported in AC450 on AF100.
DP820 is OK with AC450.
It might be possible to configure and use DP840 on Profibus using Profibus Ci541 in Ac450 and a Profibus CI801or CI840 slave.
Anyhow, The parameterisation of Profibus devices in AC400 is rudimentary and do require deep understanding in the Profibus concept.
I have not heard anyone who have tried to use DP840 on Profibus together with AC450 but we have several customers who are using
standard S800 AI, AO, DI & DO boards on a CI801 or CI840 Profibus slave together with AC 450