Rockwell Automation 1746-NR4 SLC RTD/Resistance Input Module User Manual User Manual
Page 113
Publication 1746-UM008B-EN-P - December 2006
Application Examples 113
Channel Configuration Worksheet (With Settings Established)
Input Type Select
Data Format Select
Broken Input Select
Temperature Units Select
Filter Frequency Select
Channel Enable
Excitation Current Select
Scaling Select
Not Used
11
12
13
14
15
1
0
1
0
0
0
0
9
10
8
0
6
7
0
0
0
0
4
5
1
0
1
0
1
2
3
0
0
0
0
0
0
0
1
0
0
0
0
Bit Number
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
1
0
0
1
0
1
0
1
0
1
0
Channel 0 (Ambient)
Channel 1 (Bath)
Channel 2 (Steam)
Channel 3 (Chilled H
2
O)
Bits
0…3
Input Type Selected
0000 = 100
Ω Pt. (385)
0001 = 200
Ω Pt. (385)
0010 = 500
Ω Pt. (385)
0011 = 1000
Ω Pt. (385)
0100 = 100
Ω Pt. (3916)
0101 = 200
Ω Pt. (3916)
0110 = 500
Ω Pt. (3916)
0111 = 1000
Ω Pt. (3916)
1000 = 10
Ω Cu (426)
(1)
1001 = 120
Ω Ni (618)
(2)
1010 = 120
Ω Ni (617)
1011 = 604
Ω Ni-Fe (518)
1100 = 150
Ω Potentiometer
1001 = 500
Ω Potentiometer
1110 = 1000
Ω Potentiometer
1111 = 3000
Ω Potentiometer
Bits 4
and 5
Data Format Select
00 = engineering units, x 1
(3)
01 = engineering units, x10
(4)
10 = scaled-for-PID (0 to 16383)
11 = proportional counts (-32768 to +32767)
Bits 6
and 7
Broken Input Select 00 = zero
01 = upscale
10 = downscale
11 = invalid
Bits 8
Temperature Units
Select
0 = degrees Celsius
1 = degrees Fahrenheit
Bits 9
and 10
Filter Frequency
Select
00 = 10 Hz
01= 50 Hz
10 = 60 Hz
11 =250 Hz
Bit 11
Channel Enable
0 = channel disabled
1 = channel enabled
Bit 12
Excitation Current
Select
0 = 2.0 mA
1 = 0.5 mA
Bit 13
and 14
Scaling Select
00 = module defined scaling
(default)
01 = config. words 4 and 5
for scaling
10 = config words
6 & 7 for scaling
11 = Not used (config
error)
Bits 15
Not Used
0 = always make this setting
(1)
Actual value at 0 °C (32 °F) is 9.042
Ω per SAMA standard RC21-4-1966.
(2)
Actual value at 0 °C (32 °F) is 100
Ω per DIN standard.
(3)
Values are 0.1 °/step or 0.1
Ω /step for all resistance input types except 150 Ω. For the 150 Ω resistance input type, the values are in 0.01 Ω /step.
(4)
Values are 1 °/step or 1
Ω /step for all resistance input types except 150 Ω. For the 150 Ω resistance input type, the values are in 0.1 Ω /step.