Here in Europe we find 8/1 switches as
A) 'purely diseqc 1.1' switches, which react to only diseqc 1.1
Input 1...8 commands; and as
B) 'combination diseqc 1.1+1.0' switches, which react to the commands: diseqc 1.1
Input 1 plus diseqc 1.0
A/B/C/D command,
and diseqc 1.1
Input 2 plus diseqc 1.0
A/B/C/D command.
So it really depends on the switch you have, how to chose your diseqc command.
Some switches also switch on diseqc 1.2 (motor)commands.
Some have a little switch to chose the switching mode (or need a special programmer); others have not, and have only one switching mode (or sometimes two).
This is not intended to make it difficult for you

, but just to help look for other possibilities if you cannot quickly find the right diseqc commands....
If you still have difficulties: share with us what brand/type the switch is!
Greetz,
A33