Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual - Manual (Page 47)

2–27 How Communication Takes Place and I/O Image Table Mapping
Publication 1794ĆUM057B-EN-P - November 2001
1794ĆIT8 - Thermocouple Input Module Image Table Mapping
Module Image
I/O Image
Input Data Channel 0
Input Data Channel 1
Input Data Channel 2
Input Data Channel 3
Input Data Channel 4
Input Data Channel 5
Input Data Channel 6
Input Data Channel 7
Underrange
Calibration Mask
Thermocouple Type
Input Size
Output Size
0 to 3 Words
1 to 11 Words
Reserved
Overrange
Calibration Status
Thermocouple Type
Configuration
1794ĆIT8 Read and Write Words
Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Size
Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 Read/Write Words
Reserved Read Word 1
Channel 0 Input Data Read Word 2
Channel 1 Input Data Read Word 3
Channel 2 Input Data Read Word 4
Channel 3 Input Data Read Word 5
Channel 4 Input Data Read Word 6
Channel 5 Input Data Read Word 7
Channel 6 Input Data Read Word 8
Channel 7 Input Data Read Word 9
Overrange Bits Underrange Bits Read Word 10
0 0 0 0 0
Bad
Cal
Cal
Done
Cal
Range
0 Diagnostics
Pwr
Up
Bad
Structure
CJC
over
CJC
Under
Read Word 11
8ĆBit Calibration Mask
Cal
Clk
Cal
hi
Cal
lo
Filter Cutoff FDF Data Type Write Word 1
Thermocouple 3 Type Thermocouple 2 Type
Thermocouple 1
Type
Thermocouple 0 Type Write Word 2
Thermocouple 7 Type Thermocouple 6 Type
Thermocouple 5
Type
Thermocouple 4 Type Write Word 3
Where: FDF = fixed digital filter bit