Charles,
I used to have a python based xmlrpc script to do this, but I cant find it. If I do find it I will share it.
That said if you DO have hamlib, you can easily use rigctl to talk to FLrig to achieve the same results.
For hamlib/rigctl you need to use driver # 4.
So something like this as simple as placing in a cron task in linux:
/usr/local/bin/rigctl -m 4 -r 127.0.0.1:12345 F 14106500
Where as that argument for '-r' is the flrig instance.
73 n9seo