Rockwell Automation 1769-IF4XOF2 Compact Combination Analog Module - Manual (Page 14)

14 Compact™ Combination Analog I/O Module
Publication 1769-IN057A-EN-P - July 2001
I/O Memory Mapping
Input Data File
The input data file provides access to input data for use in the control program,
over-range indication for the input and output channels, and output data feedback
as described below.
Wo
rd
Bit Position
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 SGN Analog Input Data Channel 0 0 0 0 0 0 0 0
1 SGN Analog Input Data Channel 1 0 0 0 0 0 0 0
2 SGN Analog Input Data Channel 2 0 0 0 0 0 0 0
3 SGN Analog Input Data Channel 3 0 0 0 0 0 0 0
4 Not Used
(1)
(1) All unused bits are set to 0 by the module.
I3 I2 I1 I0
5 Not
Used
H0 Not
Used
H1
Not Used
(1) E1 E0 O1 O0
6 SGN Output Data Echo/Loopback for Output Channel 0 0 0 0 0 0 0 0
7 SGN Output Data Echo/Loopback for Output Channel 1 0 0 0 0 0 0 0
IMPORTANT
Input words 6 and 7 contain the Output Data Echo/Loopback
information for output channels 0 and 1 respectively. Bits 0
through 6 and Bit 15 of words 6 and 7 should always be set to
zero in your control program. If they are not set to 0, the invalid
data flag (Ex) will be set for that channel by the module.
However the channel will continue to operate with the
previously converted value.