Black Box ServManager SW995A-R2, Руководство пользователя

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SERVMANAGERS
4.3.9 S
ET
W
IDTH OF
S
UBMASTERS
Use this command to tell a ServManager how “wide” your submasters are (that
is, how many ports each of your submasters has). If your submasters are all 8-
port models, set the Width to 8; if they are all 12-port models, set the Width to
12; and so on.
Because initial configuration and reconfiguration would be complex and
time-consuming otherwise, Width is an all-or-nothing proposition for the
ServManager: One Width value is used for every port. Because this is true, we
strongly recommend that all submasters you attach to a ServManager be the
same size. If you must attach different-sized submasters, please recognize that
you will probably either be unable to use some ports or will have to account
for nonexistent ports when you calculate port numbers and when you scan.
See
Section 3.3.2 .
Figure 4-1 on the next page is an illustration of why ServManagers need to
know this value. Without a number for Width—even assuming that Units is set
correctly to 4—if you were to select CPU 7 on either ServManager, they would
not know whether CPU 7 was attached to the submaster on port 4, the one on
port 2, or (in the non-included case of 8-, 12-, or 16-port submasters) on port
1. With Width, the ServManager knows to switch to
port 4 and send the “switch to port 1” command if Width is 2, or to switch to
port 2 and send the “switch to port 3” command if Width is 4.
The default setting for Width is 16. To issue the Set Width of Submasters
command for a ServManager (which you may do at any time), press and
release the left Control Key, type [W] followed by the number of ports on the
attached submasters (from 1 to 3 digits), and press [ENTER]. Enter the Keep
Settings command after you enter this command. Width can be set to any
value from 2 to 255, but Width values higher than 16 (allowed in order to
support future expansion capabilities) might cause the ServManager to
behave unpredictably.