January 2012 7.1 Display and Operation 1273
Module 9086 Clear PLC error message
Use this module to erase all set PLC error messages or a specific error 
message. System errors cannot be deleted.
Call:
PS B/W/D/K <Line number of the *.PET table>
0 to 999: Line number
–1: Clear all PLC error messages
CM 9086
Error recognition: 
Marker Value Meaning
NN_GenApiModule
Error
0 Error message displayed or in queue
1 Error code in NN_GenApiModuleErrorCode
NN_GenApiModule
ErrorCode
1 Line number missing
8 Incorrect operating mode, compatibility error 
marker set