Rockwell Automation 2085 Micro800 Discrete and Analog Expansion I/O Modules - Manual (Page 70)

62 Rockwell Automation Publication 2080-UM003A-EN-E - March 2013
Appendix B Expansion I/O Data Mapping
2085-IRT4 Status Data Mapping
Word Bit Position
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Status 0 DE3 DE2 DE1 DE0 OC3 OC2 OC1 OC0 R3 R2 R1 R0 S3 S2 S1 S0
Status 1 O3 O2 O1 O0 U3 U2 U1 U0 T3 T2 T1 T0 CJC
over CJC
under CJC
OC CJC
DE
Status 2 PU GF CRC Reserved
Field Descriptions for 2085-IRT4
Field Description
CJC OC Cold Junction
Compensation
Open Circuit Indicates that the cold junction sensor is open-circuit. CJC DE
bit, when set, indicates the cold junction sensor current
readings is not reliable. The previous reading shall be used
instead. It indicates internal compensation status if Tx is set.
CJC DE Cold Junction
Compensation
Data Error Indicates that the cold junction sensor current readings is not
reliable. The previous reading will be used instead. It indicates
internal compensation status if Tx is set.
CJC over Cold Junction
Compensation
overrange Indicates cold junction sensor overrange (above 75 °C).
CJC under Cold Junction
Compensation
underrange Indicates cold junction sensor is underrange (below -25 °C).
CRC CRC error Indicates there is a CRC error on data receive. All channelfault
bits (Sx) are also set. The error is cleared when the next
good data is received.
DEx Data Error Indicates that the current input data is not reliable. The
previous input data is sent to the controller instead. Diagnostic
status bits are for internal use only.
GF General Fault Indicates a fault has occurred, including: RAM test failure, ROM
test failure, EEPROM failure, and reserved bits. All channel
fault bits (Sx) are also set.
OCx Open-Circuit Flag Indicates that an open-circuit condition exists on the channel x.
Ox Over-Range Flag Indicates the controller is attempting to drive the analog output
above its normal operating range or above the channel's High
Clamp level. However the module continues to convert analog
output data to a maximum full range value if clamp levels are
not set for the channel.
PU Power Up Indicates an unexpected MCU reset has occurred in RUN mode.
All channel error bits (Ex) and fault bits (Sx) are also set. The
module stays connected with no configuration after the reset.
PU and channel fault bits are cleared when a good
configuration is downloaded.
Rx RTD compensation Indicates that the RTD compensation of channel x is not
working. This is effective for RTD and ohm type only.