Rockwell Automation 1769-IT6 Compact I/O 1769-IT6 Thermocouple/mV Input Module - Manual (Page 40)

40 Rockwell Automation Publication 1769-UM004B-EN-P - March 2010
Chapter 4 Module Data, Status, and Channel Configuration
Over-range Flag Bits (O0 through O7)
Over-range bits for channels 0…5 and the CJC sensors are contained in word 7,
even-numbered bits. They apply to all input types. When set (1), the over-range
flag bit indicates an input signal that is at the maximum of its normal operating
range for the represented channel or sensor. The module automatically resets (0)
the bit when the data value falls below the maximum for that range.
Under-range Flag Bits (U0 through U7)
Under-range bits for channels 0…5 and the CJC sensors are contained in word 7,
odd-numbered bits. They apply to all input types. When set (1), the under-range
flag bit indicates an input signal that is at the minimum of its normal operating
range for the represented channel or sensor. The module automatically resets (0)
the bit when the under-range condition is cleared and the data value is within the
normal operating range.
Configuring Channels After module installation, you must configure operation details, such as
thermocouple type and temperature units, for each channel. Channel
configuration data for the module is stored in the controller configuration file,
which is both readable and writable.
The configuration data file is shown below. Bit definitions are provided in
Channel Configuration on page 42 . Detailed definitions of each of the
configuration parameters follow the table.