I plan to connect a delta temperature controller (DT360 RA) to the computer via Kepserver and serial port and then monitor the temperature via WINCC SCADA 7.4.

The problem I have is that when the number of tags exceeds 6, a "Bad address in block" error occurs.which causes the data flow to be interrupted.

Explanation of software help for the error: "If the Register Block sizes value is set above 120 and a 32 or 64 bit data type is used for any tag, then a Bad address in block error could occur. Decrease the block size value to 120 to prevent the error from the occurring". But the number of my tags reaches seven, it gives this error. Meanwhile, I set the block size to 125. Pay attention to the two figures below.