Rockwell Automation 1794-IF4I, -OF4I, IF2XOF2I, -IF4IXT, -IF4ICFXT, -OF4IXT, IF2XOF2IXT FLEX I/O Isolated Analog Modules User Manual
Page 60
Publication 1794-6.5.8 - January 2010
60 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter
Table 4.5
Analog Input Module (1794-IF4I) Write Configuration Block
Word/Dec. Bit
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Word/Octal Bit
17
16
15
14
13
12
11
10
07
06
05
04
03
02
01
00
Word 0
EN
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Word 1
Chnl 3 Filter
Chnl 2 Filter
Chnl 1 Filter
Chnl 0 Filter
Word 2
Chnl 3 Configuration
Chnl 2 Configuration
Chnl 1 Configuration
Chnl 0 Configuration
Word 3
0
Real Time Sample Programmed Interval
Word 4
IC
1
TR
IT
0
0
0
0
RV
QK
CK
GO
Channel Number
Where:
EN = Not used on the 1794-IF4I.
IC = Initiate configuration bit
TR = Transparent bit
IT = Interrupt Toggle bit
RV = Revert to defaults bit
QK = Quick calibration
CK = Calibration clock
GO = Gain offset select
Table 4.6
Word/Bit Descriptions for the 1794-IF4I Analog Input ModuleWrite
Write Word
Decimal Bit (Octal
Bit)
Definition
Word 0
Bits 00–14 (00–16)
Not used. Set to 0.
Bit 15 (17)
Output enable bit (EN). – Not used in the 1794-IF4I module.
Word 1
Channels 0 through 3 Filter Selections (refer to Table 4.7 )
Bits 00–03
Channel 0 Filter Setting
Bits 04–07
Channel 1 Filter Setting
Bits 08–11 (10–13)
Channel 2 Filter Setting
Bits 12–15 (14–17)
Channel 3 Filter Setting
Word 2
Channel Configuration (refer to Table 4.B )
Bits 00–03
Channel 0 Configuration
Bits 04–07
Channel 1 Configuration
Bits 08–11 (10–13)
Channel 2 Configuration
Bits 12–15 (14–17)
Channel 3 Configuration
Word 3
Bits 00–14 (00–16)
Real Time Sample Interval – Programs the interval of the real time sample. Can be varied
from 0 to 30 seconds (30000 decimal). Resolution is in ms with granularity in 5ms steps.
Bit 15 (17)
Not used. Set to 0.