Siemens simatic hmi op7 Equipment Manual page 161

Mes- Cause
sage
771 Internal error
Error during communication (
773 Internal error
Error reading area pointer
774 Error on reading from "Basic Settings
parameters"
775 Internal error
Data record memory full
776 Internal error
Too many schedulers in transit
779 Internal error
Internal error during MPI download; possibly due
to buffer problems.
780 Internal error
Undefined error from communication with PLC.
781 An "Online Setter" function has been incorrectly
defined in ProTool.
783 Internal error
Error in NC messages
Equipment Manual OP7, OP17
Release 04/99
Remedy:
messages).
General
Reset and repeat MPI download.
B-19