Write the following script, (suppose tag A is assigned to tag B, and tag A is fix32. QCWATER.AAA.f_cv, label b is fix32. QCWATER.BBB.f_cv, and modify the last two tag names according to the actual situation).

Private subfixetimer11_ on timeout (byval ltime rid as long)

WriteValue ReadValue("fix32。 QCWATER.AAA.f_cv ")，" BBB "

End joint