The screen number entered in the read area "n+2" does not exist in the screen data.
At the time of communication start, MONITOUCH displays the screen given the number that is placed in the read area "n+2" ([System Setting] -> [Comm. Parameter]).
[Solutions]
Check the value placed in the read area "n+2."If there is no screen corresponding to the value, correct it to any existing screen number.
