Traditionally I create buffer routines to read all inputs into a new tag, and conversely, the output buffers to the actual output tags.
However I have seen programmers just create an Alias tag (in Control Logix) instead of building a buffer routine to move data.
It seems to me that an Alias is not a true buffer, since really it is just pointing to the actual input or output.
Is there a difference between the two and are there any risks / disadvantages using Aliases over actually moving the data into / out of new tags?
However I have seen programmers just create an Alias tag (in Control Logix) instead of building a buffer routine to move data.
It seems to me that an Alias is not a true buffer, since really it is just pointing to the actual input or output.
Is there a difference between the two and are there any risks / disadvantages using Aliases over actually moving the data into / out of new tags?