Use channel data words – Rockwell Automation 1746-INT4 Thermocouple/MV Isolated/ User Manual User Manual
Page 51
Publication 1746-UM614B-EN-P - September 2007
Channel Configuration, Data, and Status 51
Use Channel Data Words
Thermocouple or millivolt input data reside in I:e.0 to I:e.3 of the SLC
controller’s input image file (where e is the slot number assigned to
the module). The values depend on the input type and data format
that you select. When an input channel is disabled, its data word is
reset (0).
SLC Controller’s Input Image File (Data Word)
Format of a Channel Data Word
Input Type
Data Format
Engineering Units x 10
Engineering Units x 1
Scaled-for-PID
Proportional
Counts
° Celsius
° Fahrenheit
° Celsius
° Fahrenheit
C
0…2317
32…4201
0…23,170
320…32,767
0…16,383
-32,768…32767
D
0…2317 32…4201 0…23,170 320…32,767 0…16,383
-32,768…32,767
J
-210…760
-346…1400 -2100…7600 -3460…14,000 0…16,383 -32,768…32,767
K
-270…1370 -454…2498 -2700…13,700
-4540…24,980 0…16,383 -32,768…32,767
T
-270…400 -454…752 -2700…4000 -4540…7520
0…16,383 -32,768…32,767
E
-270…1000
-454…1832 -2700…10,000
-4540…18,320 0…16,383 -32,768…32,767
R
0…1768 32…3214 0…17,680 320…32,140 0…16,383
-32,768…32,767
S
0…1768 32…3214 0…17,680 320…32,140 0…16,383
-32,768…32,767
B
300…1820 572…3308 3000…18,200
5720…32,767
(2)
(2)
Type B, C, and D thermocouples cannot be represented in engineering units x 1 (°F) above 3276.7 °F. Software treats it as an over-range error.
0…16,383 -32,768…32,767
N
0…1300 32…2372 0…13,000 320…23720 0…16,383
-32,768…32,767
±50 mV
-50…50
(1)
(1)
When millivolts are selected, the temperature setting is ignored. Analog input data is the same for either °C or °F selection.
-500…500
0…16,383
-32,768…32,767
±100 mV
-1000…1000
-10000…10,000
0…16,383 -32,768…32,767
CJC Sensor
0…85
32…185
0…850
32…1850
0…16,383 -32,768…32,767
CH 0 Channel Data Word
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
CH 1 Channel Data Word
CH 2 Channel Data Word
CH 3 Channel Data Word
O:e.0
O:e.1
O:e.2
O:e.3