The MP cannot process more than 41 keystrokes before you press the ENTER key on the MP front panel. Use fewer than 41 keystrokes before you press the ENTER key.
This error only occurs when you use the MP front panel on an MP-30/35 system.
What you should do:
To clear the error, press the MP CLEAR key on the MP front panel.
Enter a valid command. The mistake may be caused by operator input.