Vaisala vLog 4.5 - Manual (Page 109)

Vaisala Veriteq vLog 4.5 103
Appendix: FAQs and Troubleshooting
Software Error Messages
Unable to allocate COM port because it is busy
vLog was unable to allocate the COM port because it was
already allocated by a different program. You may have to
wait until the COM port becomes available.
Unable to allocate COM port because it is unavailable
vLog was unable to allocate the COM port because it did not
exist in the operating system. Check your available COM
ports.
Unable to receive sync byte from COM port
vLog sent a request message to the data logger, but did not
receive any response from the data logger. This could mean
the data logger is unplugged or the cable is not connected
properly.
Unable to receive all of the bytes from COM port
vLog sent a request message to the data logger, but received
an incomplete response message from the data logger. This
may mean there is a problem with the COM port on this PC, a
problem with the cable, or a problem with the logger itself.
Check these possibilities.
Unable to communicate with logger on COM port
You may receive this error message for miscellaneous error
conditions, other than those listed previously. This message
could mean that there is a problem with the COM port on this
PC, a problem with the cable, or a problem with the logger.
Things to Try:
• Does the logger and interface cable work on a different
PC? If so, the problem likely resides in the serial port
configurations on the PC.