Rockwell Automation 1747-DSN DISTRIBUTED I/O SCANNER - Manual (Page 25)

Chapter 3
Configuration and Programming
3–7
30 I/O Block Configuration Input Image Example
Input File
I/O block Communication Status, Word 0 I:e.0
I:e.1
I:e.31
I/O block 1 Input, Word 1
I/O block 31 Input, Word 31
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Bit Number (decimal)
e = slot number of the SLC rack containing the scanner
Bits 8 and 9 are only available
to I/O blocks with 10 inputs
Bits 1 – 15, I/O block communication
status for I/O blocks 1 – 15
Bit 0, Overall communication status for
I/O blocks 1–15 and 17–31
The input word for each I/O block is placed in the word corresponding to the I/O block
address. The bits of each input word correspond to the inputs on the I/O block. For
example, input 5 of I/O block 31 is located in bit 5 of input word 31.
Reserved
I:e.16 Communication status for
I/O blocks 17–31, Word 16
Bits 1 – 15, I/O block communication
status for I/O blocks 17 – 31
I:e.17 I/O block 17 Input, Word 17
Reserved