The values read from an IAC600-S imported point are multiplied by 256.
The cause is believed to be the data bits for the value are read in the wrong order.
This issue has been raise on the StruxureWare quality report system. (21033)
It is possible to correct this reading on a point by point basis with a simple script program.
1 numeric input A
2 numeric output B
4 B = A/256
Or with the use of a function block.