Rockwell Automation 1769-IR6 Compact I/O 1769-IR6 RTD/Resistance Input Module - Manual (Page 71)

Rockwell Automation Publication 1769-UM005B-EN-P - March 2012 71
Module Data, Status, and Channel Configuration Chapter 4
The table below identifies the number of significant bits used to represent the
input data for each available filter frequency. The number of significant bits is
defined as the number of bits that will have little or no jitter due to noise, and
is used in defining the effective resolution. Note that the resolutions provided
by the filters apply to the raw/proportional data format only.
Table 17 - Input Effective Resolution Versus Input Filter Selection (Across Full Raw/Proportional Range)
Input Type Number of Significant Bits
10 Hz 50/60 Hz 250 Hz 500 Hz 1000 Hz
100 Ω Platinum 385 Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
200
Ω Platinum 385
Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
500 Ω Platinum 385 with 0.5 mA excitation current Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
500
Ω Platinum 385 with 1.0 mA excitation current
Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 7 bits
1000 Ω Platinum 385 with 0.5 mA excitation current Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
1000
Ω Platinum 385 with 1.0 mA excitation current
not valid
100 Ω Platinum 3916 Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
200
Ω Platinum 3916
Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
500 Ω Platinum 3916 with 0.5 mA excitation current Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
500
Ω Platinum 3916 with 1.0 mA excitation current
Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 7 bits
1000 Ω Platinum 3916 with 0.5 mA excitation current Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
1000
Ω Platinum 3916 with 1.0 mA excitation current
not valid
10 Ω Copper 426 with 0.5 mA excitation current not valid
10
Ω Copper 426 with 1.0 mA excitation current
Sign + 11 bits Sign + 10 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
120 Ω Nickel 618 Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
120
Ω Nickel 672
Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
604 Ω Nickel-Iron 518 with 0.5 mA excitation current Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
604
Ω Nickel-Iron 518 with 1.0 mA excitation current Sign + 13 bits Sign + 11 bits Sign + 9 bits
Sign + 8 bits Sign + 7 bits
150 Ω with 0.5 mA excitation current Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
150
Ω with 1.0 mA excitation current
Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
500 Ω Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
1000
Ω with 0.5 mA excitation current
Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
1000 Ω with 1.0 mA excitation current not valid
3000
Ω with 0.5 mA excitation current
Sign + 13 bits Sign + 11 bits Sign + 9 bits Sign + 8 bits Sign + 6 bits
3000 Ω with 1.0 mA excitation current not valid