Complex tag showing up as Int4 in SQL Tags

Ignition
1

We’re having a problem adding a PHASE tag from an Allen-Bradley ControlLogix processor to our SQL Tags. This is a fairly complex type, but it’s built-in, not a UDT. In the OPC Browser in Ignition, it shows up as a simple tag, not with the usual “folder” icon. Expanding it, however, shows all its component sub-tags. After dragging the phase tag to SQL Tags, it shows up as an Int4, and none of the sub-tags are present. It does display as expected in the OPC Quick Client on the Ignition gateway. Screenshots are attached.

We have a workaround: creating the folder manually with the name of the tag and drag all the sub-tags from the OPC Browser to the SQL Tags window seems to work.

Ignition version is 7.5.4 under Linux.





2

For whatever reason the OPC server is giving us back the structure where the R_PHASE is a tag and a folder. You are going to have to either create the folder manually and drag in the sub tags OR use the UDT feature of Ignition. I would model the UDT in the PLC as a UDT in Ignition so you only have to create it once. Here is a video on making UDTs:

youtube.com/watch?v=lXSAnGUt … 4&index=46