Rockwell Automation 1794-IF4I, -OF4I, IF2XOF2I, -IF4IXT, -IF4ICFXT, -OF4IXT, IF2XOF2IXT FLEX I/O Isolated Analog Modules - Manual (Page 111)

Publication 1794-6.5.8 - January 2010
Input, Output, Status and Configuration Files for Analog Modules when used with ControlNet 111
Table 6.6
Word/Bit Descriptions for the 1794-OF4I Isolated Analog Output Module
Word Decimal Bit
(Octal Bit) Definition
Input Word 0 Bits 00-15
(00-17) Read Back Channel 0 – During normal operation, it is a copy of the output
of channel 0. During an EN transition, it is the condition of the output as
determined by S1 and S0. Read back is an image of what the user has sent as
output to the module; no checks are performed on the data.
Word 1 Bits 00-15
(00-17) Read Back Channel 1 – During normal operation, it is a copy of the output
of channel 1. During an EN transition, it is the condition of the output as
determined by S1 and S0. Read back is an image of what the user has sent as
output to the module; no checks are performed on the data.
Word 2 Bits 00-15
(00-17) Read Back Channel 2 – During normal operation, it is a copy of the output
of channel 2. During an EN transition, it is the condition of the output as
determined by S1 and S0. Read back is an image of what the user has sent as
output to the module; no checks are performed on the data.
Word 3 Bits 00-15
(00-17) Read Back Channel 3 – During normal operation, it is a copy of the output
of channel 3. During an EN transition, it is the condition of the output as
determined by S1 and S0. Read back is an image of what the user has sent as
output to the module; no checks are performed on the data.
Word 4 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.