Module field calibration – Rockwell Automation 1769-IT6 Compact I/O 1769-IT6 Thermocouple/mV Input Module User Manual
Page 16
16
Rockwell Automation Publication 1769-UM004B-EN-P - March 2010
Chapter 1 Overview
Module Field Calibration
The module provides autocalibration, which compensates for offset and gain
drift of the A/D converter caused by a temperature change within the module.
An internal, high-precision, low drift voltage and system ground reference is used
for this purpose. The input module performs autocalibration when a channel is
initially enabled. In addition, you can program the module to perform a
calibration cycle once every 5 minutes. See
Selecting Enable/Disable Cyclic
Calibration (word 6, bit 0) on page 50
for information on configuring the
module to perform periodic autocalibration.
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