The EZFlora commands are listed in the “Irrigation Controller Command Set” document in the Downloads section of the SHN web site.
Cmd1 0x40 – turns on a valve – cmd2 0x00-0x07 specifies the valve number 1-8
Cmd1 0x41 – turns off a valve – cmd2 0x00-0x07 specifies the valve number 1-8
An example of the XML to send an Insteon command to turn on valve 1 follows:
I do not have an EZFlora to confirm this is a working example but I think it is correct. I took the SndIns template from the SHN Utility Control tab. The AA,BB,CC is the Insteon device address of the EZFlora. Parameter 5 is cmd1, parameter 6 is cmd2.