1)CVT converter RS 232 TO RS 485
works very good on com port 1
HVAC PRO works good
2)Many of our new computers have only USB ports 3 to 4
3)HVAC-Pro only has the option to select ports 1 to 2
4) My laptop still has an RS 232- Port Number one
I use my USB to serial converter with ProComm
Procomm Plus recognizes up up to four ports easily
My USB port number 4 works good with ProComm
How can I make HVAC -Pro recognize ports three to four ??
Is there a hardware or software option??
Please, scrapping all of our N-30's and Facilitators
is not an option