Rockwell Automation 1797-IRT8 FLEX Ex Thermocouple/RTD Module - Manual (Page 15)

FLEX Ex Thermocouple/RTD Input Module 15
Publication 1797-5.4 - June 2010
Fault Mode - Write Word 0
Add-on Filter Selections - Write Word 0
Reference Junction Selection - Write Word 0
Bit 06 Fault enable for channels 0…3
07 Fault enable for channels 4…7
0 = disabled
1 = enable wire-off detection
Bit 02 01 00 Definition
0 0 0 Hardware filtering only (default filtering)
0 0 1 40 Hz (25 ms)
0 1 0 10 Hz (100 ms)
0 1 1 4 Hz (250 ms)
1 0 0 2 Hz (500 ms)
1 0 1 1 Hz (1 s)
1 1 0 0.5 Hz (2 s)
1 1 1 0.2 Hz (5 s)
Bits
03…05 Reference Junction - used when sensor is set to thermocouple
and sensor mode is set to internal compensation. Sets a fixed
reference junction to compensate all thermocouple channels.
Bit 05 04 03 Reference Junction
0 0 0 0 °C
0 0 1 20 °C
0 1 0 25 °C
0 1 1 30 °C
1 0 0 40 °C
1 0 1 50 °C
1 1 0 60 °C
1 1 1 70 °C