How to configure Ethernet/IP signals if assembly instance exceeds the LDT limit of 100 tags?

I have a system where the number of signals for the input and output assembly instance exceeds the LDT limit of 100 tags.

I tried creating a second LDT with same assembly instances and I am able to read/write using this configuration. Only issue is I get following warning while downloading the PDT.

Does configuring this way cause any issues?

Is there a workaround where I don't get the warning message?

  

  • There is no way currently to acknowledge the warnings so they stop appearing. There other cases where additional PDTs to the same device (PLC) are required to achieve throughput and they generate warnings of duplicate IP. The warnings can be ignored but can not be suppressed.

    Unless there are other combinations of different assemblies that you could use to access all the data, such that you don’t have duplicate assembly records, the warning will persist.

    If the device manufacturer has no concerns with a client requesting the same packet twice this sounds like a workable configuration.

    Andre Dicaire

  • Did a great job and I have only one further thing to add. That is we have customers that will regularly create overlapping signals for a configuration. (They will use a boolean to feed into the EDC block, but then a 32 bit unsigned to pull out the entire diagnostic word). We have also found no way to get rid of the warning and they have just gotten used to it.