Thanks Brian, i will check what we sent it with. I know it was a USB plugged device ("thing" to us) , which we plugged into our PC, and also had a DALI 15V power supply wired to the USB "thing", and then the DALI wires went from the DALU PSU box to our lamp.
The "USB thing" communicates with an App on the PC called "Terminal Deploy".
We type the bytes to be sent into terminal deploy.....eg type "0xFE" into the LHS dialog box and "0x07" into the RHS dialog box and it sends that, or at least we though it did..."0xFE" means "dim to a level", and the "0x07", means dim to 7/255 *max.
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0xFE is always the first byte for us....the top post shows the sending of 0xFE then 0x0F.. or we hoped it did.