Allen-Bradley 1794-IRT8 - Page 39

Publication 1794-6.5.12 - November 1997
4-6 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter
Write Word 0 Bits 06-07 Fault Mode bits – when a bit is set (1), fault mode is enabled for that channel. Bit 06
corresponds to channels 0-3; bit 07 corresponds to channels 4-7.
0 = disabled
1 = enable wire-off detection
Bits 08-11
(10-13)
Data format – module defaults to –4000 to 10000 in millivolt mode, and 0 to 5000 in
ohms mode
Bit11100908 Data type for channels 0-7
0000 °C
0001 °F
0010 °K
0011 –32767 to +32767
0100 0 to 65535
0101 through 1111 not used
Bits 12-15
(14-17)
Not used
Write Word 1 Bits 00-03 Sensor Type (Thermocouple or RTD)
RTD Type
Bit 03 02 01 00 Sensor type for channels 0 through 3
0000 Resistance (default)
0001 100 ohm Pt α = 0.00385 Euro (–200 to +870°C)
0010 200 ohm Pt α = 0.00385 Euro (–200 to +400°C)
0011 100 ohm Pt α = 0.003916 U.S. (–200 to +630°C)
0100 200 ohm Pt α = 0.003916 U.S. (–200 to +400°C)
0101 100 ohm Nickel (–60 to +250°C)
0110 200 ohm Nickel (–60 to +200°C)
0111 120 ohm Nickel (–80 to +320°C)
1000 10 ohm Copper (–200 to +260°C)
1001 through 1111 not used
Word
Dec. Bits
(Octal Bits)
Description
Allen-Bradley PLCs