I am using WinCC OA 3.14 with the EIP driver connected to a AB CompactLogix PLC. The driver connects with out error and I can read (set up periphery address for a DP) tags from the "Controller Tags" table.
However, I am not able to successfully read tags from MainProgram tag table. What is the proper way to format the PLC symbolic tag name to reference tags in the AB program tables?
Ethernet IP (eip driver) symbolic name syntax
- johna_ssa
- Posts:21
- Joined: Wed Jan 28, 2015 6:14 pm
Ethernet IP (eip driver) symbolic name syntax
- johna_ssa
- Posts:21
- Joined: Wed Jan 28, 2015 6:14 pm
Re: Ethernet IP (eip driver) symbolic name syntax
To close the loop on this, it turns out that you can't access tags in the AB program space using a symbolic reference like "Program:routine_name.tag_name". The only tags you can access are the ones in the global "Controller Tags" table.