KNX/EIB Device not found

[Warichet]

Hi,

I've a strange behaviour for which I need some advice.

On my workbench, I've a bus connection where I test/program my devices before installation.
I've a Merten BCU1 690099, when I push the Prog button, I see in ETS3/Diagnostics that the participant 1.1.40 is in programming mode.
When I try to access 1.1.40 by any means, it says "Device not found"
Bizarre.
Maybe it's dead ?
I've a Hager TX308 604308 (from the shelf), when I push the Prog button, I see in ETS3/Diagnostics that the participant 1.1.10 is in programming mode.
When I try to access 1.1.10 by any means, it says "Device not found"

It beats me ! Any idea ?

PS: I've 2 lines 1.1.x & 1.0.x (no filtering) the workbench is now on line 1.0.x (before the move, it was on line 1.1.x and was working fine)
PS: Programming is done through the HS which didn't move

[Warichet]

Maybe it's dead ?

No
I moved the device 1.1.40 to line 1.1.x and it works.
ETS can find it and program it.
There are plenty of articles about several lines with Line Coupler and filtering, no problem, I understand.
But in this particular case where the LC has NO filtering, shouldn't it work from any line ?
Maybe it's due to the fact thar the programming happens through the HS (as opposed to a standard I/F) ?

[Warichet]

Hi

I forgot to mention: when my workbench was connected to line 1.1.x, I could program devices for 1.1.x and 1.0.x
The reverse seems not to be true.
I guess I've an understanding problem here.

So, all programming happens through the HomeServer and it's FT1.2 which is on 1.1.254.

If I change the PA from 1.1.254 to 1.0.254, does it have consequences on the general operation of my installation ?

Thank for any hint.

[Warichet]

Hi,
I'm still busy with the same problem, I need some advice about architecture and topology.
I've 2 lines (1.1.x & 1.0.x) and I'm using the HS to do all ETS work (see picture)
I was working on WorkplaceA.
To install a new device, I connect the new device to the bus (1.1.x) and do all the set-up and programming before putting the device into final place (for any device 1.1.x or 1.0.x).

I had to move my workplace to WorkplaceB.
When I try to install/program a new device, I get a message from ETS "Device not found".
It has been said many times here in the forum, that a programming interface should be on it's own line. OK. Is this true when the LC is in pass-through mode (no filtering) ? It is my understanding that in this case, all telegrams should flow back and forth as if it was a single line. Is there anything special about "programming" telegrams ?

How can I solve my problem ?
Is it possible to change the PA of the FT1.2 from 1.1.254 to 1.0.254 without problems/side effects with the HS ?

Do I need to move the connection point of the FT1.2 from line 1.1.x to physical line 1.0.x ?

It is my understanding that on a single cable segment, one can install devices from different areas, i.e. 1.1.x, 1.2.x etc. without LC. Of course, this is not compliant with the architecture, it is not recommended, no argument about that, but according to my info, it works.

[Klaus Gütter]

Is this true when the LC is in pass-through mode (no filtering) ? It is my understanding that in this case, all telegrams should flow back and forth as if it was a single line. Is there anything special about "programming" telegrams ?

The "Pass through" setting has an effect only on group telegrams. Programming is via 1-1 connections (target address = individual address) and are ALWAYS filtered by line couplers accoring to their own address and the target address.

Klaus

[Warichet]

The "Pass through" setting has an effect only on group telegrams. Programming is via 1-1 connections (target address = individual address) and are ALWAYS filtered by line couplers according to their own address and the target address.

Thank you.
Lesson learned