Communication problem between AC500 PM592 and CP651 after network failure
we are working on a system with 7 AC500 PM592 PLC´s and two CP651 panels. The panels and the PLC´s are communicating with the ABB CodeSys ETH protocol. We are having some issues with this solution. After a network problem some of the screens are unable to restore the communication with the PLC. In the CP600 logger we see this error for some tags:
read datagram failed - Error tag .xxxxxx not present in symbol file.
But the variables are present in the symbol file. After a restart of the panel everything is working fine again.
We configured the ABB CodeSys ETH protocol in the panel as 1 protocol with 7 slaves. This is because there are only 4 protocols available, so we are unable to give each PLC it's own protocol.
Insert the URL that your highlighted text will link to.
Copy the video's "embed" tag into Embedded Video below.