question

I just installed one MPII 5000 together with a Cerbo and EM24 and have chosen the ethernet version (modbus over ethernet).

If I would have to do some nitpicking, the ethernet version looks faster to me than the RS485 version because the latter communicates over a 9600 baud connection where the modbus over ethernet communication goes faster?

My advise would always be: go with an external Cerbo, which gives you a lot more flexibility if a device fails.

Hello Paul,

my idea on the internal Multi-GX was, that it has the faster CPU than Cerbo GX. Maybe this does help in that matter?! Or will this not have any effect on load response times??

@Pedaaa More horsepower in a CPU doesn't always improve:

In 1985, Lotus123 (yeah I know, that was looong time ago and before Excel took over the market) was running from a floppydisk of 720kByte and took less than 500kByte. It run smooth on a Intel 75MHz machine with only 2 MB memory.

Now we have Excel with a barking dog as an assistant and a lovely visual style.Together with the rest of the Office suite it takes 4GB! And you need at least a 2GHz CPU with 8GB of memory.

90% of the jobs can still be done with Lotus123 however, people are used with fancy interfaces.

What I want to make clear: a good programmed piece of machinecode on a restricted piece of hardware can do it's work more reliable and faster than a crappy written software on a faster system :-).

From the redundancy point of view: If your MP fails, you can still see values from the batteries when looking at the portal.

ok, but do you also have ideas regarding the "slow response" and AC-in vs AC-out questions?!

and do you know, that EM24 RS485 would cause slower load respones than Em24 Ethernet or is this just your thought?

My system with ethernet energymeter reacts very fast, changes are instantly

But I have no reference then my gut feeling

and some years of technical experience, if that counts :-)

have you read through the initially posted links?!

They say and proof, that there is a significant response time difference, if using grid meter vs. using CT-Sensor or no external meter.

And it does make a difference if the loads are connected to AC-in or AC-out.

I only wanted to know more specific which configurations exactly trigger this "slowed down response time" behaviour?!

So, if you have no reference... or have not tried different configurations, How could you tell anyting about differences?! Sorry, this would not answer the questions