I would like to backup PLC tag values from multiple devices (like recipes) using a transaction group.
When I drag multiple instances of a UDT into a standard transaction group, the default Target Names and Item Names are duplicated. The duplicate target names causes an error when starting the group.
Possible solutions are to:
- Edit each row to make them unique
- Create a transaction group and table for each device and maintain them separately
- Write a custom script to save/restore every tag value
- Setup my OPC server to have unique names for each device and don’t use a UDT
A block transaction group wouldn’t work because of the array positioning dependency. It would be broken as soon as I add or remove a tag.