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 the MP front panel on an MP-30/35 system is used.
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.