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Schneider Electric 890USE17700 User Manual

Page 129

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Data Exchange

890USE17700 April 2004

129

Node
Configuration

The next eight contiguous registers (registers 45359 through 45366) display
locations where modules have been configured on the island bus. This information
is stored in Flash memory. At start up, the actual locations of the modules on the
island are validated by comparing them to the configured locations stored in
memory. Each bit represents one configured location:

z

A value of 1 in a bit indicates that a module has been configured for the
associated location.

z

A value of 0 in a bit indicates that a module has not been configured for the
associated location.

The first two registers, shown below, provide the 32 bits that represent the module
locations available in a typical island configuration. The remaining six registers
(45361 through 45366), are available to support the island’s expansion capabilities:

15 14 13 12 11 10 9 8

7 6 5 4 3 2 1 0

Register 45359

location 1

location 2

location 3

location 4

location 5

location 6

location 7

location 16

location 8

location 9

location 10

location 11

location 12

location 13

location 14

location 15

15 14 13 12 11 10 9 8

7 6 5 4 3 2 1 0

Register 45360

location 17

location 18

location 19

location 20

location 21

location 22

location 23

location 32

location 24

location 25

location 26

location 27

location 28

location 29

location 30

location 31