ATEN CS-9134 - Manual (Page 18)

Port ID Numbering
Each CPU Port on a Master View installation is assigned a unique Port ID.
You can directly access any computer on any level of the installation by
specifying the Port ID of the CPU port that the computer is connected to -
either with the Hotkey port selection method, or with the OSD.
The Port ID is a one, two, or three digit number. It is determined by the Stage
Level and CPU Port number of the Master View unit that a computer is
connected to.
The first digit represents the CPU Port number of the First Stage unit; the
second digit represents the CPU Port number of the Second Stage unit; the
third digit represents the CPU Port number of the Third Stage unit.
w A computer attached to a First Stage unit has a one digit Port ID (from 1 to
4 for the CS-9134; from 1 to 8 for the CS-9138), that corresponds to the
CPU Port number that the computer is connected to.
w A computer attached to a Second Stage unit has a two digit Port ID:
w The first digit represents the CPU Port number on the First Stage unit
that the Second Stage unit links back to.
w The second digit represents the CPU Port number on the Second Stage
unit that the computer is connected to.
For example, a Port ID of 2 3 refers to a computer that is connected to CPU
Port 3 of a Second Stage unit that links back to CPU Port 2 of the First Stage
unit.
w Likewise, a computer attached to a Third Stage unit has a three digit Port
ID. A Port ID of 2 4 1 refers to a computer that is connected to CPU Port 1
of a Third Stage unit, that links back to CPU Port 4 of a Second Stage unit,
which, in turn, links back to CPU Port 2 of the First Stage unit.
2005-12-21
14 CS-9134 / CS-9138 User Manual