The connection address is two digits...the 1st is the SCSI id (this
is 0-7) and the second one is the Logical unit number.  The LUN is
usually 0...so connection addresses are usually 00, 10, 20, 30, 40, 50,
60, 70.

I admit the early pubs on this were not very clear.  I think the
the version 2 pubs are better.  For example the ADSM Device Configuration
manual says..

"The connection address is a two digit number.  The first digit is the SCSI
ID (the value you recorded on the worksheet).  The second digit is
the device's SCSI logical unit number (LUN), which is usually zero,
unless otherwise noted."

There are certain devices and configuration where the LUN is something
other than 0 (ie, 1) but I believe these are documented.

Greg Tevis