
Publication 1746-UM008B-EN-P - December 2006
66 Channel Configuration, Data, and Status
Channel Configuration Word (O:e.0 through O:e.3) - Bit Definitions
Bit(s) Define To select Make these bit settings in the Channel Configuration Word
1514131211109876543210
0…3 Input type selection
100 Ω Pt RTD (385)
0000
200 Ω Pt RTD (385)
0001
500 Ω Pt RTD (385)
0010
1000 Ω Pt RTD (385)
0011
100 Ω Pt RTD (3916)
0100
200 Ω Pt RTD (3916)
0101
500 Ω Pt RTD (3916)
0110
1000 Ω Pt RTD (3916)
0111
10 Ω Cu RTD (426)
(1)
1000
120 Ω Ni RTD (618)
(2)
1001
120 Ω Ni RTD (672)
1010
604 Ω NiFe RTD (518)
1011
150 Ω Resistance Input
1100
500 Ω Resistance Input
1101
1000 Ω Resistance Input
1110
3000 Ω Resistance Input
1111
4…5 Data format selection
Engineering units X 1
(3)
00
Engineering units X 10
(4)
01
Scaled-for-PID 10
proportional counts 11
6…7 Broken input selection
Set to Zero
00
Set to Upscale 01
Set to Downscale 10
Invalid 11
8 Temperature units selection
Degrees C
(5)
0
Degrees F
(5)
1
9…10 Filter frequency selection
10 Hz
00
50 Hz 01
60 Hz 10
250 Hz 11
11 Channel enable
Channel Disabled
0
Channel Enabled 1
13…14 Scaling selection
Default Scaling 0 0
User-set Scaling (Range 0)
(6)
01
User-set Scaling (Range 1)
(6)
10
Invalid 1 1
15 Unused
Unused
(7)
0
(1)
Actual value at 0 °C (32 °F) is 9.072 Ω per SAMA standard RC21-4-1966.
(2)
Actual value at 0 °C (32 °F) is 100 Ω per DIN standard.
(3)
Values are in 0.1 degree/step or 0.1 Ω/ step for all resistance types, except 150 Ω. For the 150 Ω resistance input type, the values are in 0.01 Ω/step.
(4)
Values are in 1 degree/step or 1 Ω/step for all resistance input types, except 150 Ω. For the 150 Ω resistance input type, the values are in 0.01 Ω/step.
(5)
This bit is ignored when a resistance device is selected.
(6)
Applies to proportional counts data format selected using bits 4 and 5.
(7)
Ensure unused bit 15 is always set to zero.
Not used Not Used Not U
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