Rockwell Automation 1794-APBDPV1 FLEX I/O PROFIBUS Adapter User Manual - Manual (Page 69)

Publication 1794-UM064B-EN-P - May 2014
Communicate With Your Module 57
Read 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.
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, W1 (bit 03) corresponds to channel 1.
Bits 04…05 Overrange bits – 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.
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.
Write Word 0 Bits 00…12
(00…14) Not used.
Bit 13…14
(15…16) Safe State Configure 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/0 mA
Bit 13 = 1, bit 14 = 1 – hold the output at its current level
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.
Write Word 1 Bits 00…15
(00…17) Output Channel 0 data. See Configure Your Output Channels on page 55 .
Write Word 2 Bits 00…15
(00…17) Output Channel 1 data. See Configure Your Output Channels on page 55 .
Write Word 3 Input Channels 0 and 1 Filter Selections. (See Setting the Input Filters on page 55 ).
Bits 00…01 Channel 0 Filter Setting
Bits 04…07 Channel 1 Filter Setting
Bits 8…15
(11…17) Set to 0.
Write Word 4 Channel Configuration
Bits 00…03 Input Channel 0 Configuration – See Configuring Your Input Channel on page 45
Bits 04…07 Input Channel 1 Configuration – See Configuring Your Input Channel on page 45
Bits 08…11
(10…13) Output Channel 0 Configuration – See Configuring Your Input Channel on page 45 .
Bits 12…15
(14…17) Output Channel 1 Configuration – See Configuring Your Input Channel on page 45 .
Write Word 5 Bits 00…14
(00…16) Real Time Sample Interval – Programs the interval of the real time sample. Can be varied
from 0...30 s (30000 decimal). Resolution is in ms with granularity in 5 ms steps.
Bit 15 (17) Set to 0.
1794-IF2XOF2I Analog Combo Module Word/Bit Descriptions
Word Decimal Bit
(Octal Bit) Definition