Rockwell Automation 2085 Micro800 Discrete and Analog Expansion I/O Modules User Manual
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Rockwell Automation Publication 2080-UM003A-EN-E - March 2013
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Expansion I/O Data Mapping Appendix B
Analog input status values can be read from Global Variables IO_Xx_ST_yy,
where “x” represents the expansion slot number 1…4 and yy represents the status
word number 00…04. Individual bits within a status word can be read by
appending a .zz to the Global Variable name, where "zz" is the bit number 00...15.
2085-IF8
(1)
Status Data Mapping
Word
R/W
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Status 0
R
PU
GF
CRC
Reserved
Status 1
R
Reserved
HHA1 LLA1
HA1
LA1
DE1
S1
Reserved
HHA0 LLA0
HA0
LA0
DE0
S0
Status 2
R
Reserved
HHA3 LLA3
HA3
LA3
DE3
S3
Reserved
HHA2 LLA2
HA2
LA2
DE2
S2
Status 3
R
Reserved
HHA5 LLA5
HA5
LA5
DE5
S5
Reserved
HHA4 LLA4
HA4
LA4
DE4
S4
Status 4
R
Reserved
HHA7 LLA7
HA7
LA7
DE7
S7
Reserved
HHA6 LLA6
HA6
LA6
DE6
S6
(1) See Bit Field Descriptions table for a detailed definition of each bit.
Field Descriptions for 2085-IF4 and 2085-IF8 Input Modules
Field
Description
CRC
CRC error
This bit is set (1) when there is a CRC error on the data
received. It gets cleared when the next good data is
received.
DE#
Data Error
These bits are set (1) when the enabled input channels are
not getting any reading for the current sampling. The
respective returned Input Data value remains the same as
the previous sample.
GF
General Fault
This bit is set (1) when any of these faults occur: RAM test
failure, ROM test failure, EEPROM failure, and reserved
bits. All channel fault bits (S#) are set too.
HA#
High Alarm
Overrange
These bits are set (1) when the input channel exceeds a
preset high limit defined by the configuration selected (UL#
is set).
HHA#
High High Alarm
Overrange
These bits are set (1) when the input channel exceeds a
preset high-high limit defined by the configuration selected
(UL# is set).
LA#
Low Alarm
(underrange)
These bits are set (1) when the input channel goes below
the configured low alarm limit.
LLA#
Low Low Alarm
(underrange)
These bits are set (1) when the input channel goes below
the configured low-low alarm limit.
PU
Power Up
1. This bit is set after a power on. It is cleared when good
configuration data is accepted by the module.
2. It is set when an unexpected MCU reset occurs in RUN
mode. All channel fault bits (S#) are set too. The module
stays connected with no configuration after the reset. PU
and channel fault bits (S#) are cleared when a good
configuration is accepted.
S#
Channel fault
These bits are set(1) if the corresponding channels are
open, have data error or under/overrange.