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Installing NetLink modem cards 25
Model 1001MC Operations Guide 2 • Hardware installation
Using this information, the Model 1001MC will poll the specified address range in each rack. Thus, in a single
power supply system, the address range for rack #1 (the rack with the 1001MC installed) will be from address
1 to address 15
Note The 1001MC is always address 0.
The 1001MC will then begin polling rack #2 on the daisy chain port starting from address 16. In a redundant
power supply system, the address range for rack #1 (the rack with the 1001MC installed) will be from
address 1 to address 13. The 1001MC will then begin polling rack #2 on the daisy chain port starting from
address 14.
The daisy chained racks are set up in the same manner with 13 addresses being available in a redundant system
and 15 addresses being available in single supply system. When you disable a rack the addresses are still set
aside for that rack space. If a power supply is removed, the addressing will not change unless you make the
change through the 1001MC web pages. This allows easy service of the power supplies.
If the address is 0 (all ON position), then the unit will run completely from its DIP-switch configuration. This
can be useful for testing circuits independently of the management system. If an address is placed on the
switch, the unit will boot from its stored flash configuration and begin looking for poll commands from the
Model 1001MC.
Switch S1 allows an 8 bit address to be assigned to a link. The following rules apply to setting the address. Bit
S1-8 is the least significant bit. A bit set to ON is considered a 0. A bit set to OFF is considered a 1. Patton
Electronics suggests that you set your addresses starting with address 1 at the far left of your rack (farthest away
from the power supplies) and increment the numbers by one as you go from left to right. Setting the addresses
in this manner will make configuration easier as you start using the web page management. An example of this
is shown below.
1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - NMS - PS2 - PS1