Change NVL List Identifier on Run Time

2021-11-26T13:39:25.700000Z

Hi,

it works when you change the variables
RxPDOs_UDP[0].sNetTelegramm.Header.nIndex
on the Receiver
and
TxPDOs_UDP[0].sNetTelegramm.Header.nIndex
on the Sender.

There is on both sides a second variable that holds the value from the list identifier, but i dont know if this is important too.

TxPDOs_UDP[0].nIndex
and
RxPDOs_UDP[0].nIndex

Does anyone know anything about this?

Change NVL List Identifier on Run Time

2020-05-05T01:36:35.774000Z

Hi everyone,

I'm working on a project in CoDeSys V3.5 SP15 with 20+ PLC's which all communicate back to a central PLC. These PLC's communicate via Network Variable Lists. All 20+ PLC's have the same (sender) NVL with the only difference being their List Identifier ({NVL Name} -> Properties -> Network Variables Tab -> List Identifier). This list identifier ensures the central reciever PLC knows which PLC the information is coming from.

The problem I'm having is that I can't seem to find a way to change this List Identifier during runtime. I could change the List Identifier, compile the project, create a new copy of the project, change the List Identifier again and repeat 20+ times, however this is very slow and I don't particularly like the idea of compiling 20+ programs everytime I make a change to the program.

I'm wondering if there is there a way to change the List Identifier during runtime?

Any info on this would be great!

Cheers

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