Thank, my input & output are all in binary mode
>>The lChar should be input from COM port,
>>it seem like the C5 error occurs when I output it
>>to COM port only
>
>>>How is lChar being derived?
>>>
>
>
Are you by chance running the control in binary mode?>
>>>
>>>Is your C5 occurring at the .Output line?
>>>
Best Regards
Virusim