CR300-Series Datalogger 
4 
After the driver has been installed, connect the CR300 USB port to the PC with the included USB cable (pn 
27555). The connection supplies 5 V power over USB as well as a communication link. 
NOTE  The Power LED indicates the program and power state of the CR300. Because the 
CR300 ships with a program set to run on power-up, the Power LED will quickly flash 
3 times every 10 seconds when powered over USB. See 
TABLE  6-4,  Power LED 
(p. 40)
, for other flash patterns. 
With the CR300 connected to the 
PC, a port titled CR300 will appear 
in the COM Port list. Select the 
CR300 COM Port. The number of 
your COM port may differ. 
 
 
Enter the Baud Rate and PakBus 
Address. These must match the 
hardware settings of your CR300. 
The default baud rate of a CR300 
datalogger is 115200, and the 
default PakBus Address is 1. 
 
 
Click Next.
Select the COM Port labeled CR300. Keep all other defaults. 
Keep all default Datalogger Settings.