Rockwell Automation 1769-IF16V Compact High Density Analog Input Modules - Manual (Page 31)

Publication 1769-UM018A-EN-P - October 2008 31
Module Data, Status, and Channel Configuration Chapter 3
Some systems, like the 1769-ADN DeviceNet adapter system, also
allow the bits to be altered as part of the control program using
communication rungs. In that case, it is necessary to understand the
bit arrangement
.
Input Data File The input data table lets you access analog input module read data for
use in the control program, via word and bit access. The data table
structure is shown in the table below. For each input module, slot
x,
words 0…15 in the input data file contain the converted values of the
analog inputs. The most significant bit (MSB) is the sign bit, which is
in two’s complement format. ‘Nu’ indicates not used with the bit set
to 0.
TIP
Not all controllers support program access to the configuration
file. Refer to your controller’s user manual.
Input Data Array
Word/
Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Word 0 SGN Analog Read (Input) Data Value Channel 0
Word 1 SGN Analog Read (Input) Data Value Channel 1
Word 2 SGN Analog Read (Input) Data Value Channel 2
Word 3 SGN Analog Read (Input) Data Value Channel 3
Word 4 SGN Analog Read (Input) Data Value Channel 4
Word 5 SGN Analog Read (Input) Data Value Channel 5
Word 6 SGN Analog Read (Input) Data Value Channel 6
Word 7 SGN Analog Read (Input) Data Value Channel 7
Word 8 SGN Analog Read (Input) Data Value Channel 8
Word 9 SGN Analog Read (Input) Data Value Channel 9
Word 10 SGN Analog Read (Input) Data Value Channel 10
Word 11 SGN Analog Read (Input) Data Value Channel 11
Word 12 SGN Analog Read (Input) Data Value Channel 12
Word 13 SGN Analog Read (Input) Data Value Channel 13
Word 14 SGN Analog Read (Input) Data Value Channel 14
Word 15 SGN Analog Read (Input) Data Value Channel 15
Word 16 Nu Time Stamp Value
Word 17 S15 S14 S13 S12 S11 S10 S9 S8 S7 S6 S5 S4 S3 S2 S1 S0
Word 18 L3 H3 U3 O3 L2 H2 U2 O2 L1 H1 U1 O1 L0 H0 U0 O0
Word 19 L7 H7 U7 O7 L6 H6 U6 O6 L5 H5 U5 O5 L4 H4 U4 O4
Word 20 L11 H11 U11 O11 L10 H10 U10 O10 L9 H9 U9 O9 L8 H8 U8 O8
Word 21 L15 H15 U15 O15 L14 H14 U14 O14 L13 H13 U13 O13 L12 H12 U12 O12