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 EN000000000000000
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.
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