Rockwell Automation 1794-IF4I, -OF4I, IF2XOF2I, -IF4IXT, -IF4ICFXT, -OF4IXT, IF2XOF2IXT FLEX I/O Isolated Analog Modules - Manual (Page 116)

Publication 1794-6.5.8 - January 2010
116 Input, Output, Status and Configuration Files for Analog Modules when used with ControlNet
Word 4 Bits 00–15
(00–17) Real Time Sample. The elapsed time in increments programmed by the real time
sample interval.
Word 5 Bits 00 Reserved
Bits 01 Calibration Done bit (DN). – This bit is set to 1 after a calibration cycle is completed.
Bits 02 Calibration Bad bit (BD). – This bit is set to 1 if the channel calibration coefficients
cannot be saved or 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 configuration mode is
selected (bit 15, word 6 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 6 Bits 00-01 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. Refer to Table 4.15.
Bits 02-03 Wire-Off status bits. (W). – These bits, when set (1), indicate the corresponding
current output channel is open. W0 (bit 02) corresponds to channel 0, and W1 (bit 03)
corresponds to channel 1.
Bits 04-05 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. Refer to Table 4.15.
Bits 06-09
(06-11) Not used. Set to 0.
Bits 10-11
(12-13) Hold output bits (P). – These bits are set (1) in response to Q0 or Q1 and a transition of
the EN bit. When P0 or P1 is set (1), they indicate that the output is holding at the level
in the readback data for the respective channel. These bits return to 0 when the output
data matches the readback output data.
Bits 12-15
(14-17) Not used. Set to 0.
Output Word 1 Bits 00-12
(00-14) Not used.
Bits 13-14
(15-16) Safe State Source bits (S1/S0). – Not used in ControlNet applications. Turn these
bits off (i.e. set to 0).
Bit 15 (17) Output enable bit (EN)
Set this bit off (0) for the configuration block.
Set this bit on (1) for the output block.
Table 6.8
Word/Bit Descriptions for the 1794-IF2XOF2I Isolated Analog Combo Module
Write Word Decimal Bit
(Octal Bit) Definition