Rockwell Automation 1794-IF4I, -OF4I, IF2XOF2I, -IF4IXT, -IF4ICFXT, -OF4IXT, IF2XOF2IXT FLEX I/O Isolated Analog Modules - Manual (Page 89)

Publication 1794-6.5.8 - January 2010
Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter 89
Word 6 Bits 00-03 Wire-Off status bits. (W). – These bits, when set (1), indicate the
corresponding current output channel is open. W0 corresponds to channel 0,
W1 corresponds to channel 2, etc.
Bits 04-07 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) Set to 0.
Write Word 1 Bits 00-12
(00-14) Not used.
Bits 13-14
(15-16) Safe State Source bits (S1/S0). – When EN is 0, these bits designate the
source of the safe state data. Bit 13 = 0, bit 14 = 1 – reset outputs to 0V/0mA
(used with 1794-ASB/C) Bit 13 = 1, bit 14 = 1 – hold output at its current level
(used with 1794-ASB/C Bit 13 = 0; bit 14 = 0 – Safe state data is in output
data words
Bit 15 (17) Output enable bit (EN). – When set (1), the outputs are enabled. This bit
must be set in order for the real time data to appear at the outputs. If this bit
is not set (0), the outputs will be determined by S1/S0.
Word 2 Bits 00-15
(00-17) Channel 0 output data. – The output data is real time data formatted to the
selected configuration. (This data is also safe state data when directed by S!
and S0.)
Word 3 Bits 00-15
(00-17) Channel 1 output data. – The output data is real time data formatted to the
selected configuration. (This data is also safe state data when directed by S!
and S0.)
Word 4 Bits 00-15
(00-17) Channel 2 output data. – The output data is real time data formatted to the
selected configuration. (This data is also safe state data when directed by S!
and S0.)
Word 5 Bits 00-15
(00-17) Channel 3 output data. – The output data is real time data formatted to the
selected configuration. (This data is also safe state data when directed by S!
and S0.)
Word 6 Channel Configuration (refer to Table 5.9)
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
Table 5.10
Word/Bit Descriptions for the 1794-OF4I Isolated Analog Output Module
Word Decimal Bit
(Octal Bit) Definition