If you are sending the command every minute I would avoid using a Wait with a value of 60000 wired to it. Something that pauses your code for that long will make your code unresponsive to user inputs. For long durations it is better to use a shorter Wait and count the number of times needed to achieve your desired wait time. You could also use the system time and compare it with the time you sent the last command.
Mark Yedinak
Certified LabVIEW Architect
LabVIEW Champion
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot