For one print plate, this is what you do:
[0] [x] [0] [Onactivate] [Self] [firerelay]
[1] [x] [0] [Onrelay] [Self] [toggleeventenabled] [1 2 3 4]
[2] [x] [0] [Onrelay] [Self] [Setprint] [G]
[3] [_] [0] [Onrelay] [Self] [Toggleeventenabled] [3 4 5 6]
[4] [_] [0] [Onrelay] [Self] [Setprint] [U]
[5] [_] [0] [Onrelay] [Self] [Toggleeventenabled] [5 6 7 8]
[6] [_] [0] [Onrelay] [Self] [Setprint] [N]
[7] [_] [0] [Onrelay] [Self] [Toggleeventenabled] [1 2 7 8]
[8] [_] [0] [Onrelay] [Self] [Setprint] [S]
[9] [x] [1000] [Onrelay] [Self] [Firerelay]
This should work, I based it off of my scrolling text board for my CRPG's stock exchange board.