>Constant Value Description > >comEvSend 1 There are fewer than Sthreshold number of characters in the transmit buffer. >comEvReceive 2 Received Rthreshold number of characters. This event is generated continuously until you use the Input property to remove the data from the receive buffer. >comEvCTS 3 Change in Clear To Send line. >comEvDSR 4 Change in Data Set Ready line. This event is only fired when DSR changes from 1 to 0. >comEvCD 5 Change in Carrier Detect line. >comEvRing 6 Ring detected. Some UARTs (universal asynchronous receiver-transmitters) may not support this event. >comEvEOF 7 End Of File (ASCII character 26) character received. >>