Schneider Electric 890USE17700 manual 130

Data Exchange

Node Assembly The next eight contiguous registers (registers 45367 through 45374) indicate the presence or absence of configured modules in locations 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 a module:

￿A value of 1 in a given bit indicates that the configured module is not present. A value of 0 indicates that the correct module is present in its configured location, or that the location has not been configured.

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

(45369 through 45374) are available to support the island’s expansion capabilities:

Register 45367

15 14 13 12 11 10 9 8 module in 16

module in 15 module in 14

module in 13 module in 12

module in 11 module in 10

module in 9

7 6 5 4 3 2 1 0

module in 1 module in 2

module in 3 module in 4

module in 5 module in 6

module in 7 module in 8

Register 45368

15 14 13 12 11 10 9 8

module in 32 module in 31

module in 30 module in 29

module in 28 module in 27

module in 26 module in 25

7 6 5 4 3 2 1 0

module in 17 module in 18

module in 19 module in 20

module in 21 module in 22

module in 23 module in 24

130 890USE17700 April 2004