Denso BHT-400-CE Reference Manual page 308

Exceptions
￭
Name of Exception
ObjectDisposedException
ArgumentException
[Ex.] Specify a baud rate of 115200 bps, set the parity to none, the data length to 8 bits,
and the stop bit to 1 bit.
[VB] MyComm.Params = "115200,N,8,1"
[C#] MyComm.Params = "115200,N,8,1";
Meaning
The COM port has not been opened yet.
The specified parameter value(s) lies outside the
permissible range.
- 302 -