Hardware reference guide

I/O Modules
35013379 02 October 2007 517
Measurement
Ranges
Ranges in the following table are expressed in degrees C. The user can select either
0.1 or 1.0° (C or F) for the output data format.
If the 0.1° format is selected, the decimal point is implied (i.e., a reading of 1234
should be interpreted as 123.4°). The internal CJC data is reported in the same units
as the TC output.
All TC output data is in signed integer format except as noted for Type B (see below).
Measurement
Range Tables
This table shows thermocouple ranges.
This table shows millivolt ranges.
Note: If the TC is open, then the warning bit is cleared and the out-of-range bit is
set. If it is over range, then the channel’s output data word is always 7FFFH; if it is
under range, the channel’s output data word is always 8001H. These are the
possible highest and lowest values.
Thermocouple Ranges
Data
Format
Input Minimum
Reading
Normal Over Range
Warning
Out-of-
Range Set
Modsoft
Signed
Format
J Type TC -228.5 -210 to +760 760.1 to 778.6 >778.7
K Type TC -302.9 -270 to +1370 1370.1 to 1405.0 >1405.1
E Type TC -293.8 -270 to +1000 1000.1 to 1023.9 >1024.0
T Type TC -279.5 -270 to +400 400.1 to 409.6 >409.7
S Type TC -89.9 -50 to +1665 1665.1 to 1705.0 >1705.1
R Type TC -89.6 -50 to +1665 1665.1 to 1704.7 >1704.8
B Type TC
(See Note 3)
+86.4 +130 to +1820 1820.1 to 1863.7 >1863.8
Millivolt Ranges
Offset
Binary
-100 mV
0
+ 100 mV
Gain = 25
0
0
8000h
FFFFh
None See Note 2
-25 mV
0
+25 mV
Gain = 100
0
0
8000h
FFFFh
None See Note 2
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com