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Configuring the Island Bus
30
890USE19600 April 2004
Auto-Addressing
Introduction Each time that the island is powered up or reset, the NIM automatically assigns a
unique island bus address to each module on the island that will engage in data
exchange. All Advantys STB I/O modules engage in data exchange.
About the Island
Bus Address
An island bus address is a unique integer value in the range 0 through 127 that
identifies the physical location of each addressable module on the island. Address
127 is always the NIM’s address. Addresses 1 through 12 are available for
addressable Advantys STB modules. The remaining addresses are not used in a
basic island configuration.
During initialization, the NIM detects the order in which modules are installed and
addresses them sequentially from left to right, starting with the first addressable
module after the NIM. No user action is required.
Addressable
Modules
Only the Advantys STB I/O modules in the basic segment require island bus
addresses.
Because they do not exchange data on the island bus, the following are not
addressed:
PDMs
empty bases
termination plate