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Rockwell Automation 2085 Micro800 Discrete and Analog Expansion I/O Modules User Manual

Page 67

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Rockwell Automation Publication 2080-UM003A-EN-E - March 2013

59

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.