11
3.4.9 Determining COM Port Numbers
When connecting an 8002-1-1 or 8002-1A-1 datalogger to a PC with an internal serial
port(s) the COM Port number that LogView requires is usually COM1 or COM2 but,
occasionally may be COM3 if the PC has more than one internal serial port. The figure
below (see Figure 12) illustrates that the PC has two serial ports, one internal, COM1 and
the other via a USB to serial converter, COM13.
Figure 12 - Datalogger Connection Mismatch
When connecting an 8002-1-2 or 8002-1A-2 datalogger to a PC then the COM Port
number that LogView requires can be any number and depends on how many other
devices are attached to the PC such as, internal serial ports and Bluetooth devices. Figure
13 below illustrates that the PC has three serial ports, one internal, COM1 and the other
two via USB to serial converters, COM13 and COM3. One way to determine which COM
port an 8002-1-2 datalogger is attached to is to disconnect the cable and see which COM
device disappears from the Device Manager Ports list.
Figure 13 - Device Manager Ports List
In this case, COM3 is actually the 8002-1-2 datalogger and not a universally available
serial port.