Accessing Data via the Acyclic Buffer

AOIs are capable of exposing only SINT, INT, DINT, REAL, and BOOL data types as Input/Output parameters. Due to this constraint, STRING registers are placed within the acyclic data buffer and can be accessed there.

After you toggle the bit to access the acyclic system asset management data (see Calling Acyclic Data), the STRING data does not appear in the AOI. Instead, it appears within the acyclic data buffer. This buffer can be found in the Controller Tags list with naming convention {DeviceName}_AcyclicBuffer.

The remaining data is accessible within the AOI.