There is a problem, do not know how to solve it. Help please.
Panel PC + touch panel mp277 8
On the panel PC running opc server.
Need to change the value of a particular variable in the panel PC with mp277.
If try to connect to panel PC with mp277 I have error in "alarm view"
code -2147221005 (800401F3) - Invalid class string.
Using WIinCC flexible 2008 sp2.
Panel PC + PС is operating normally
How can I solve this problem?