Rockwell Automation 1794-IF4I, -OF4I, IF2XOF2I, -IF4IXT, -IF4ICFXT, -OF4IXT, IF2XOF2IXT FLEX I/O Isolated Analog Modules User Manual
Page 115
Publication 1794-6.5.8 - January 2010
Input, Output, Status and Configuration Files for Analog Modules when used with ControlNet 115
Isolated Analog Combo Module (Cat. No. 1794-IF2XOF2I) Image
Table Mapping
Module Image
I/O Image
Input Data Channel 0
Input Data Channel 1
Read Back Output Data Channel 0
Read Back Output Data Channel 1
Output Data Channel 0
Output Data Channel 1
Input Size
Output Size
0 to 3 Words
0 to 7 Words
Read
Write
Real Time Sample
PU FP CF
BD DN
V1 V0
U1 U0
W1 W0
P1 P0
Set to 0
EN S1 S0
Channel Configuration
Real Time Sample Programmed Interval
IC
RV QK CK GO
Channel #
1
Channel Filters
Q0
Q1
TR IT
Safe State Data Channel 0
Safe State Data Channel 1
Module
Configuration
Safe State
Data
Configuration Size
7 Words
Write
Set to 0
EN S1 S0
Set EN bit Off (0) for Configuration block
Set EN bit On (1) for Output block
S0 and S1 bits are not used in ControlNet applications. Set to Off (0).
Module actions (Reset, Safe State and Hold Last State) are set using programming software.
Table 6.8
Word/Bit Descriptions for the 1794-IF2XOF2I Isolated Analog Combo Module
Write Word
Decimal Bit
(Octal Bit)
Definition
Input Word 0
Bits 00–15
(00–17)
Input Channel 0 input data – Real time input data per your configuration
Word 1
Bits 00–15
(00–17)
Input Channel 1 input data – Real time input data per your configuration
Word 2
Bits 00–15
(00–17)
Read Back Output Channel 0 – During normal operation, it is a copy of the output of
channel 0. During an EN transition, it is the condition of the output as determined by S1
and S0. Note: Read back data is an image of what the user has sent as output to the
module; no checks are performed on the data.
Word 3
Bits 00–15
(00–17)
Read Back Output Channel 1 – During normal operation, it is a copy of the output of
channel 1. During an EN transition, it is the condition of the output as determined by S1
and S0. Note: Read back data is an image of what the user has sent as output to the
module; no checks are performed on the data.