Rockwell Automation 1794-IF4I, -OF4I, IF2XOF2I, -IF4IXT, -IF4ICFXT, -OF4IXT, IF2XOF2IXT FLEX I/O Isolated Analog Modules - Manual (Page 117)

Publication 1794-6.5.8 - January 2010
Input, Output, Status and Configuration Files for Analog Modules when used with ControlNet 117
Word 1 Bits 00-15
(00-17) Output Channel 0 data
Word 2 Bits 00-15
(00-17) Output Channel 1 data
Configuration
Word 0 Input Channels 0 and 1 Filter Selections
Bits 00-01 Channel 0 Filter Setting
Bits 04-07 Channel 1 Filter Setting
Bits 08-15
(11-17) Not used
Word 1 Channel Configuration
Bits 00-03 Input Channel 0 Configuration
Bits 04-07 Input Channel 1 Configuration
Bits 08-11
(10-13) Output Channel 0 Configuration
Bits 12-15
(14-17) Output Channel 1 Configuration
Word 2 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. Refer to 55.
Word 3 Bits 00-03 Channel calibration selection bit. When this bit is set (1), the channel can be
calibrated using the initiate calibration bit (IC). Bit 00 corresponds to input channel 0, bit
01 corresponds to input channel 1, it 02 corresponds to output channel 2, bit 03
corresponds to output channel 3
Bit 04 Gain/Offset selection bit (GO). – When this bit is cleared, a 0 to 1 to 0 transition of
the CK bit performs on offset calibration. When this bit is 1, the module is directed to do
a gain calibration.
Bit 05 Calibration clock bit (CK). – When this bit is set to 1 (calibration mode), the
calibration coeffiicient for the selected channels is accepted. When this bit is reset (0),
the accepted calibration coefficients for the selected channels are stored, applied, and
the calibration mode exited. Monitor status bits DN and BD for succesful calibration.
Bit 06 Quick Calibration bit (QK). – Normally reset (0). When this bit is set (1) during a
calibration sequence, the calibration coefficient is stored to all related configurations
for the selected channels. NOTE: This method of calibration quickly calibrates the
selected channels, you will not be within the rated accuracy of the module.
Bit 07 Revert to defaults bit (RV). – Normally reset (0). When set (1) during a calibration
procedure, default values for selected channels are used for the calibration coefficient.
NOTE: You will not be within the rated accuracy of the module.
Bits 08-09
(10-11) Not used. Set to 0.
Table 6.8
Word/Bit Descriptions for the 1794-IF2XOF2I Isolated Analog Combo Module
Write Word Decimal Bit
(Octal Bit) Definition