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+--- Thread: Bacnet package (/showthread.php?tid=205)
Bacnet package - Sandstrand - 29.01.2016
Was trying to use the bacnet read/write functions on a newer firmware and the package on the website gave only errors.
Using LM4 version 20150917
Is the package posted on the website under examples an old one?
RE: Bacnet package - admin - 29.01.2016
Try this one:
https://dl.openrb.com/lm-15.09/pkg/genohm-scada-bacnet_20150727_mxs.ipk
RE: Bacnet package - Sandstrand - 01.02.2016
Perfect, worked at first try
I know there's a limit on COV subscriptons on the LM4, but the way I see there should be no problem using event scripts to send to a foreign bacnet device as a poor mans COV subscription?
There will be about 200 scripts that will send on change (event). Will this be a problem or do you think the LM4 is capable of handling this traffic?
- S -
RE: Bacnet package - admin - 01.02.2016
Depends on how often the values are going to change. The number of COV subscribtions can be increased if needed, do you need 200 or more?
RE: Bacnet package - Sandstrand - 01.02.2016
Since the default COV value is 1 and cant be changed easily from LM4 we will try to just use event based sendings on the values.
Will limit the sendings on the KNX devices so the traffic is at a minimum.
But for binary values a COV of 1 is sufficient and we see that about 50 COV subscriptions will fit most projects we have.
If CO2 deviced are used there will be need of about 100 COV values so in general a limit of 100 will be enough for most use-cases.