Active node array scanner module status, Active node array, Scanner module status – Rockwell Automation 1769-SDN Compact I/O DeviceNet Scanner Module User Manual User Manual
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Publication 1769-UM009E-EN-P - August 2009
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DeviceNet I/O Image Chapter 6
Active Node Array
The Active Node array contains 64 bits of data that represents each slave
node’s status. A slave node is considered active when it is present and enabled
in the master’s scanlist. A bit value of 0 means Not Active, a bit value of 1
means Active.
Scanner Module Status
The Scanner Device Status is a 4-byte array.
Slave Node Status
Input Word
Bit 0...15
Description
14
(1)
(1)
Bit 0 corresponds to Node 0, Bit 1 corresponds to Node 1 … Bit 15 corresponds to Node 15.
Node 0…15
Bit ON (1) = Active node
Bit OFF (0) = Inactive node
15
(2)
(2)
Bit 0 corresponds to Node 16, Bit 1 corresponds to Node 17 … Bit 15 corresponds to Node 31.
Node 16…31
16
(3)
(3)
Bit 0 corresponds to Node 32, Bit 1 corresponds to Node 33 … Bit 15 corresponds to Node 47.
Node 32…47
17
(4)
(4)
Bit 0 corresponds to Node 48, Bit 1 corresponds to Node 49 … Bit 15 corresponds to Node 63.
Node 48…63
Scanner Device Status
Input Word
Bit
Description
20
0…7 (lower byte)
Scanner Address in BCD
8…15 (upper byte)
Scanner Status in BCD
21
0…7 (lower byte)
Slave Device Address in BCD
8…15 (upper byte)
Slave Device Status in BCD