I’m just starting playing with OPC Tags of type array and I don’t understand a couple of things:
I have a S7-300 Siemens PLC and declare a variable like that
First off, if I declare an Integer Array I would expect to get an array of integers: what I get instead is an array of bools.
Second: I cannot understand how the Data Type declaration, i.e. Integer Array or Long array or Boolean Array plays together with the data type syntax declared in the OPC Item Path address. More precisely I cannot figure out how many bools actually the variable is composed of, when I play with different combinations of those two parameters.
Third: are array OPC Items really read only, a part of the workaround to write the complete variable value?
Thanks in advance