Does Do-More have a flipflop relay? Pulse it once it is on, pulse it again it is off. For years I've been getting this functionality by a using a counter and reading the least significant bit. My homebuilt CNC has a DL06 salvaged from an old job and I control the shop vac from an outlet controlled by a single pushbutton programmed this way. I have two buttons on different sides of the machine for convenience. Seem like it is time for this function to make it into a PLC as an instruction!