Rockwell Automation 1734-IT2I Thermocouple and RTD Input Module User Manual - Manual (Page 14)

Publication 1734-UM004F-EN-E - December 2012
4 About POINT I/O Modules
Data Format (1734-IT2I, 1734-IR2, and 1734-IR2E modules)
You must choose a module data format in your user program. Select the
format. These are four predefined scales and one custom scale.
°C, F, °R, and °K returns data in tenths of a degree (250 implies 25.0 °).
For the 1734-IR2E, ⋅ C, ⋅ F, ⋅ R, and ⋅ K returns data in hundreths of a degree
(250 implies 2.50 ⋅ ). If scaling is set to 10,000 and 20,000, the module returns
hundredths of an ohm (12345 implies 123.45).
For the 1734-IR2, if using ohms, the default data returned is in tenths of ohms
(1234 implies 123.4
Ω ).
For the 1734-IT2, if using mV, the default data is returned in hundredths of a
mV, or tens of a
μ V (3500 implies 35.00 ⋅ ).
If the input scale is custom scale, you can specify scaling points as shown in
the table.
Data Formats
mV Custom Scale
⋅
C Celsius Predefined Scale
⋅
F Fahrenheit
⋅
K Kelvin
⋅
R Rankine
1734-IT2I Thermocouple Input Module 1734-IR2 RTD Input Module
Thermocouple
Type Low Scaling
Endpoint High Scaling
Endpoint RTD Type Low Scaling
Endpoint High Scaling
Endpoint
mV 0 mV 70mV Ohms 100
Ω
500
Ω
Type B 212 °F (100 °C) 1832 °F (1000 °C) 100
Ω
Pt
α =
0.00385 Euro 32 °F (0 °C) 932 °F (500 °C)
Type C 32 °F (0 °C) 4199 °F (2315 °C) 200
Ω
Pt
α =
0.00385 Euro 32 °F (0 °C) 932 °F (500 °C)
Type E 32 °F (0 °C) 1832 °F (1000 °C) 100
Ω
Pt
α =
0.003916 U.S. 32 °F (0 °C) 932 °F (500 °C)
Type J 32 °F (0 °C) 1832 °F (1000 °C) 200
Ω
Pt
α =
0.003916 U.S. 32 °F (0 °C) 932 °F (500 °C)
Type K 32 °F (0 °C) 1832 °F (1000 °C) 10
Ω
Cu
α =
0.00427 32 °F (0 °C) 482 °F (250 °C)
Type N 32 °F (0 °C) 1832 °F (1000 °C) 100
Ω
Ni
α =
0.00618 32 °F (0 °C) 482 °F (250 °C)
Type R 32 °F (0 °C) 1832 °F (1000 °C) 120
Ω
Ni
α =
0.00672 32 °F (0 °C) 482 °F (250 °C)
Type S 32 °F (0 °C) 1832 °F (1000 °C) 120
Ω
Ni
α =
0.00618 32 °F (0 °C) 482 °F (250 °C)
Type T 32 °F (0 °C) 212 °F (100 °C)