Hello all:
i begin to write a OPC driver for controllogix.I find that the RSLinx read data by the tag name which i defined in PLC,not by address,am i right?
Some OPC drivers i write are generally reading data by address.
If the driver really read data by tagname,a datablock of the OPC server can only read a variable every time?
if you understand my doubt ,please give me a reply ,thanks a lot.
i begin to write a OPC driver for controllogix.I find that the RSLinx read data by the tag name which i defined in PLC,not by address,am i right?
Some OPC drivers i write are generally reading data by address.
If the driver really read data by tagname,a datablock of the OPC server can only read a variable every time?
if you understand my doubt ,please give me a reply ,thanks a lot.
