Bit definitions for 2085-IRT4

The following table introduces the bit definitions for the 2085-IRT4 status values.
Bit definitions for the 2085-IRT4 status values
Item
Description
CJC OC
Cold Junction Compensation Open Circuit
Indicates that the cold junction sensor is open-circuit.
CJC DE
Cold Junction Compensation Data Error
When set, indicates the cold junction sensor current reading is not reliable. The previous reading is used instead. It indicates internal compensation status if T
<x>
is set.
CJC over
Cold Junction Compensation overrange
Indicates that the cold junction sensor is overrange.
CJC under
Cold Junction Compensation underrange
Indicates that the cold junction sensor is underrange.
CRC
CRC error
Indicates that there is a Cyclic Redundancy Check (CRC) error on the data received. It is cleared when valid data is received. All channel fault bits (S
<x>
) are also set.
DE
<x>
Data Error
Indicates that the current input data is not reliable. The previous input data is sent to the controller instead.
GF
General Fault
Indicates that a fault has occurred. For example: RAM test failure, ROM test failure, EEPROM failure, and reserved bits. All channel fault bits (S
<x>
) are set.
OC
<x>
Open-Circuit Flag
Indicates an open-circuit condition exists on channel
<x>
.
O
<x>
Over-Range Flag
Indicates the input of channel
<x>
is at the maximum of its normal operating range. The module automatically resets the bit when the data value falls below the maximum for the range.
PU
Power Up
Indicates that an unexpected MCU reset has occurred when in RUN mode. All channel error bits (E
<x>
) and fault bits (S
<x>
) are set. The module remains connected but without configuration data. The PU and channel fault bits are cleared after you download a valid configuration.
R
x
RTD compensation
Indicates the Resistance Temperature Detector (RTD) compensation of
channel <x>
is not functioning. Only used for RTD and ohm types.
S
x
Channel Fault
Indicates that there is an error associated with channel
<x>
.
T
x
Thermocouple compensation
Indicates the thermocouple compensation of channel
<x>
is not functioning. Only used for thermocouple types.
U
x
Underrange
Indicates the input of channel
<x>
is at the minimum end of its normal operating range. The module automatically resets the bit when the underrange condition is cleared and the data value is within the normal operating range.
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