Author Topic: How many node can be used on one network  (Read 3196 times)

lijun0

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How many node can be used on one network
« on: October 27, 2013, 03:28:54 PM »
I have a question. How many Plus 1 controller can be connected to the same bus and work properly? 255 ?

Lijun

Offline Marbek_Elektronik

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Re: How many node can be used on one network
« Reply #1 on: October 28, 2013, 09:22:04 AM »
Hi,
I want to try to give an answer:

It depends on the configuration of your system.
Somewhere I have read about 15 IO-Modules?

I have build a system with 2 Can-Joysticks, 1 MC050-10, 1 DP250, 1 IX012 3 OX 024
and the bus traffic was about 60%.

You have to watch the bus traffic.

Controller and Input and Output modules and other modules send every e.g. 20ms information.
You can change this time to a higher parameter if it is OK for your application.
So, look to the traffic!

I hope, this helps a little,

Bernd

Marbek Elektronik, Dipl.-Ing. Bernd Konrad
Dienstleistung, Entwicklung, Herstellung

Offline Jakob

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Re: How many node can be used on one network
« Reply #2 on: October 28, 2013, 01:03:09 PM »
Hi,
mebib posted a link relevant to this, some time ago.

http://powersolutions.danfoss.com/stellent/groups/publications/documents/product_literature/520l0719.pdf
on page 21, you will find a nice list of estimated CAN-bus loads for the different controllers.

Regards
 Jakob

lijun0

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Re: How many node can be used on one network
« Reply #3 on: October 29, 2013, 10:07:47 AM »
Thanks for your reply! I can control the bus load. The concern is hardware that I read from an article which states there is a limit of 110 node on the same bus because of voltage .

best regards
Lijun

Offline Jakob

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Re: How many node can be used on one network
« Reply #4 on: November 01, 2013, 12:50:17 PM »
Interesting, do you have a link to this article?
I doubt that I would ever need above 110 nodes, but never say never. Even silent nodes are nodes too.

But then maybe another bus would be more suitable.