Question:
As seen below, I have an XObject with one driver and three I/O tags:
The driver starts on offline mode, and its parameterization (IP, port, and network address) happens at AfterStart event:
'Settings Parameters
Dim arr(3)
arr(1) = Array("IO.Ethernet.MainIP", Parent.IP)
arr(2) = Array("IO.Ethernet.MainPort", Parent.Port)
arr(3) = Array("ModiconModbus.DefaultSlaveAddress", Parent.Address)
Write -1, 0, 0, 3, arr
'Online
Write -1, 0, 0, 4, 1
Three XObject instances were inserted in the server’s data server, and theoretically the driver should consume 9 I/O points, but it’s actually consuming 15. Is this behavior correct?
Solution:
When you write on the driver via scripts, regardless of its mode (online or offline), even inexistent tags are part of the total tag count. Example:
Write -1, 0, 0, 3, arr
Write -1, 0, 0, 4, 1
In this case, the behavior is correct, and two more tags for each instance will be added to the general count, which will make a total of 15 I/O points.
