This is the PLID = Physical Location IDentifier (PLID).
Channels are immaterial unless you have a PKM.
First Channel --> Select the attached device type.
Second Channel --> Select the attached device type PKM12, PKM48, AIM, or Dual PKM. Unassigned channels must be left "No Device".
So you are looking at cabient or unit 2, shelf 9, slot 9, circuit 1, channel 1
on the block this might be marked as 9/9/1