AC500 - CP600 Abb codesys - eth protocol
I am using abb codesys eth protocol for communication between AC500 PLC and CP600 panel, If i made some change in the program the tag reference in '.SYM' file is changing always. So i have to update the taglist in the HMI always. I am not changing the taglist.
pls help me to findout the reason.
thanks in advance.
Voted best answer
You might have an extra tag in the sym file or in the panel.
You can check it by holding your finger on the panel until a menu appear and choose logging. There should come a description of which tag is faulty.
You also have to check ressources-->target settings-->General in the codesys part of automation builder. You have to mark download symbol file.
Give it a go
ABB Codesys eth protocol will asign address of each tag automatically. So if you do changes in PLC it will assign address for each tag again. For that reason you have to import .Sym file in HMI and update it (Through Update Button) with the previous one always.
Or else you can use Modbus protocol and assign address to each variable to avoid above problem.