Veris Technologies VIS_NIR Spectrophotometer - Operating Instructions - Manual (Page 18)

Pub# OM17-NIR Shank
2-15
Setting port order
- Check Device Manager for port order (Start  settings  control panel 
system  hardware tab  device manager  double click ports)
- Ports will be listed in order, as they should be set in software.
Figure 43
In this example the order to set the ports would be as follows: (see Figure 5.) Different
computers will have the ports in different orders; however if the software is used on one
computer only, the ports will never change. The ports will always be in the order of
spare, GPS, temp, control, and spectrometer. For future reference, make note of the
com port order your computer is using.
Spare:
COM20
GPS: COM11
Temp: COM12
Control: COM13
Spectrometer: COM8
The last port (COM9) will not be used.
Auxiliary case ports
Spectrometer case ports
The software could increment the
number of the ports by one
depending on the computer. For
example, the device manager
shows ports 20,21,22,23,9 but the
software shows 21,22,23,24,10.
Just use the incremented numbers
if this situation occurs.