Rockwell Automation 1794-IF4I, -OF4I, IF2XOF2I, -IF4IXT, -IF4ICFXT, -OF4IXT, IF2XOF2IXT FLEX I/O Isolated Analog Modules User Manual
Page 83
Publication 1794-6.5.8 - January 2010
Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter 83
Word 6
Bit 00
Reserved
Bit 01
Calibration Done bit (DN). – This bit is set to 1 after a calibration cycle is
completed.
Bit 02
Calibration Bad bit (BD). – This bit is set to 1 if the channel calibration
coefficients cannot be saved or be read properly.
Bits 03-07
Set to 0.
Bits 08-11
(10-12)
Reserved
Bit 12 (14)
Set to 0.
Bit 13 (15)
Configuration mode bit (CF) – This bit is set (1) when the calibration mode
is selected (bit 15, word 5 in the block transfer write set to 1). When this bit is
set (1), the module status indicator flashes.
Bit 14 (16)
Field Power Off bit (FP) – This bit is set (1) when the 24V field power fails.
When this bit is set (1), the module status indicator flashes.
Bit 15 (17)
Power Up (unconfigured state) bit (PU). – This bit is set (1) when the
configuration word is all zeroes (0) due to a reset (adapter power cycle or
module insertion) or a cleared configuration word (all 0). When this bit is set
(1), the module status indicator flashes.
Word 7
Bits 00-03
Underrange bits (U). – These bits are set (1) when the input channel is
below a preset limit as defined by the configuration selected. U0 (bit 00)
corresponds to input channel 0 and U1 (bit 01) corresponds to input channel 1,
etc. Refer to Table 5.5.
Bits 04-07
Overrange bits (V). – These bits are set (1) when the input channel is above
a preset limit as defined by the configuration selected. Bit 04 corresponds to
input channel 0 and bit 05 corresponds to input channel 1, etc. Refer to
Table 5.5.
Bits 08-15
(10-17)
Not used. Set to 0.
Write Word 1
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 2
Channels 0 through 3 Filter Selections (refer to Table 5.4)
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
Table 5.6
Word/Bit Descriptions for the 1794-IF4I Isolated Analog Input Module
Word
Decimal Bit
(Octal Bit)
Definition