Sistemas SCADA normally use a tagname database that contains information (data) about I/O points, as well as the internal memory addressing of cont...

Sistemas SCADA normally use a tagname database that contains information (data) about I/O points, as well as the internal memory addressing of control equipment. Based on this knowledge, select the alternative that correctly defines 'tagname'.


a) Tagname is actually a type of variable that can only assume boolean values.
b) Tagname is actually a type of variable, usually a character.
c) Tagname is actually a type of variable that can only assume integer values.
d) Tagname is actually a type of variable that can only assume real values.
e) Tagname is actually a memory allocation of the supervision station that stores a value from a set called type.