Reading Values from I/O

The SRO reads data from an I/O reference, if an attribute is configured to read data from an I/O. The object performs the following actions for the SRO attributes that are configured to read data from an I/O reference:

• Sets the quality of an SRO attribute to Good, when it reads the data from an I/O. It can convert the data from an I/O to the datatype of the SRO attribute.

• Sets the quality of an SRO attribute to Bad, when the I/O reference cannot read the data. The Read Status attribute associated to the SRO attribute updates the MxStatus value to indicate the failure.

• Sets the quality of an SRO attribute to Bad when the data read from an I/O reference cannot convert the datatype from an I/O reference to the datatype of the SRO attribute.