Rockwell Automation 1746-NT8 SLC 500 Thermocouple/mV Analog Input Module User Manual - Manual (Page 54)

Publication 1746-UM022B-EN-P - January 2005
4-14 Channel Configuration, Data, and Status
Data Format Type Status (Bits 5 and 6)
The data format bit field indicates the data format you have defined
for the channel. This field reflects the data type selected in bits 5 and
6 of the channel configuration word.
Open-Circuit Type Status (Bits 7 and 8)
The open-circuit bit field indicates how you have defined the
open-circuit bits configuration word, and therefore, the response of
the thermocouple module to an open-circuit condition. This feature is
active for all input types, including CJC temperature input.
Temperature Units Type Status (Bit 9)
The temperature units field indicates the state of the temperature units
bit in the configuration word (bit 9).
Channel Filter Frequency (Bits 10 and 11)
The channel filter frequency bit field reflects the filter frequency you
selected in the configuration word.
Open-Circuit E
This bit is set (1) whenever a configured channel detects an open
circuit condition at its input. An open-circuit at the CJC sensor also
flags this error if the channel input type is either thermocouple or CJC
temperature. A range error on the CJC sensor also flags this bit if the
input type is thermocouple.
Under-Range Error (Bit 13)
This bit is set (1) whenever a configured channel detects an under
range condition for the channel data. An under-range condition exists
when the input value is equal to or below the specified lower limit of
the particular sensor connected to that channel.