ICP DAS USA VXC-142 User Manual

ICP DAS USA VXC-142 User Manual Manual pdf 11 page image

2.2 COM Port Mapping and Board IDThe Board ID and COM port mapping are the same, which is set by the S1DIP switch. The S1 DIP switch has different functions under different OS.For DOS users, the S1 DIP switch acts as Board ID. When there are two ormore multi-port serial cards in a single system, it is difficult to identify individualcard number. For easier identification, the VXC series card includes a Board IDfunction.For Windows users, the S1 DIP switch acts as COM port number selectorand the COM port number is depending on the Board ID. If the Board ID is 0,then the driver finds a valid number for each port. If the Board ID is not 0, thenthe driver uses the “Board ID” to be the first COM port number and uses the“Board ID +1” to be the next COM port number and so on.For Linux users, it’s the same as Windows users but for TTY devicenumber selector.The configuration examples are as follows.S1Note: It’s recommended to select a unique COM port number (BoardID) by users. This helps users to identify and fix these cards and portsin a system without confuses.Note: The port will not work if the COM port number is conflicted underWindows or Linux system. In that case, users should try other COM portnumbers.Usually, the COM1 and COM2 are reserved by systems. And it’srecommended to reserve the COM3 and COM4 if you will have otherPlug&Play serial ports in the future. This prevents confliction.ON8 7 6 5 4 3 2 1VXC Cards User’s Manual (Ver. 1.1, 06/09.2005, pmh-012-01) -----11