Rockwell Automation 1769-IR6 Compact I/O 1769-IR6 RTD/Resistance Input Module - Manual (Page 65)

Rockwell Automation Publication 1769-UM005B-EN-P - March 2012 65
Module Data, Status, and Channel Configuration Chapter 4
Selecting Enable/Disable Cyclic Autocalibration (Word 6, Bit 0)
Configuration word 6, bit 0 lets you configure the module to perform an
autocalibration cycle of all enabled channels once every 5 minutes. Cyclic
calibration functions to reduce offset and gain drift errors due to temperature
changes within the module. Setting this bit to 1 disables cyclic calibration, the
default (0) enables the autocalibration function. See Effects of Autocalibration
on Accuracy on page 79.
Determining Effective
Resolution and Range This section provides tables showing effective resolution and range for all
possible input data types at each filter frequency. Look up your required
resolution, range, and input type in the tables. Choose the frequency that most
closely matches your requirements.
TIP For systems that allow modifying the state of this bit, you
can program the autocalibration cycle to occur whenever
you desire via the ladder program, by cycling the bit from 0
to 1.