Allen-Bradley 1794-IRT8 - Page 50

Publication 1794-6.5.12 - November 1997
How Communication Takes Place and I/O Image Table Mapping with the DeviceNet Adapter 5-7
Write Word 2 Bits 00-03 Sensor Type (Thermocouple or RTD)
RTD Type
Bit 03 02 01 00 Sensor type for channels 0 through 3
0 0 0 0 Resistance (default)
0 0 0 1 100 ohm Pt α = 0.00385 Euro (–200 to +870°C)
0 0 1 0 200 ohm Pt α = 0.00385 Euro (–200 to +400°C)
0 0 1 1 100 ohm Pt α = 0.003916 U.S. (–200 to +630°C)
0 1 0 0 200 ohm Pt α = 0.003916 U.S. (–200 to +400°C)
0 1 0 1 100 ohm Nickel (–60 to +250°C)
0 1 1 0 200 ohm Nickel (–60 to +200°C)
0 1 1 1 120 ohm Nickel (–80 to +320°C)
1 0 0 0 10 ohm Copper (–200 to +260°C)
1001 through 1111 not used
Bits 00-03 Thermocouple Type
Bit 03 02 01 00 Sensor type for channels 0 through 3
0 0 0 0 mV (default)
0 0 0 1 B 300 to 1800°C (572 to 3272°F)
0 0 1 0 E –270 to 1000°C (–454 to 1832°F)
0 0 1 1 J –210 to 1200°C (–346 to 2192°F)
0 1 0 0 K –270 to 1372°C (–454 to 2502°F)
0 1 0 1 L –200 to 800°C (–328 to 1472°F)
0 1 1 0 N –270 to 1300°C (–450 to 2372°F)
0 1 1 1 R –50 to 1768°C (–58 to 3214°F)
1 0 0 0 S –50 to 1768°C (–58 to 3214°F)
1 0 0 1 T –270 to 400°C (–454 to 752°F)
1010 through 1111 not used
Word
Dec. Bits
(Octal Bits)
Description