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Interfacing PDOs of NI9214 module via TwinCat3

Good day community,

 

Here is the situation:

 

I want to make a comparison of accuracy between a Beckhoff module (EL3314-0020) and  a NI9214 using a Thermocouple simulator.

The project will be build in Twincat3.

 

To interface communication with the Beckhoff PLC (CX9020),
i am using an Ethercat expansion chassis (NI9145).
NI9145 is be connected to EK1110 Beckhoff module to establish Ethercat communication.

 

I have successfully managed to export the .xml file of NI9145, including NI9214, and the module is properly identified in TwinCat environment.

I attach it for your convenience.

 

The problem is that i get no feedback for the AI channels of the 9214, because , as can be seen,

the data type is defined as INT24, which cannot be properly associated with any data type provided within TwinCat3.

 

I have tried linking a 3byte array to value of interest, to no avail. See attached screenshot of PDOs of interest.

 

Any ideas on how to handle this situation?

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