Reading Data From Your Module; Mapping Data For The Analog Modules; Thermocouple/Mv Input Module (1794-It8) Read - Allen-Bradley 1794-IT8 User Manual

4–4 Writing Configuration to and Reading Status from your Module with a Remote I/O Adapter
Reading Data From Your
Module
Mapping Data for the
Analog Modules
Decimal Bit 15 14
Octal Bit 17 16
Read Word 0
1
2
3
4
5
6
7
8
Publication 1794-6.5.7 – April 1997
Read programming moves status and data from the thermocouple
input module to the processor's data table. The processor's user
program initiates the request to transfer data from the
thermocouple/mV input module to the processor.
The following read and write words and bit/word descriptions
describe the information written to and read from the
thermocouple/mV input module. The module uses up to 11 words of
input image and up to 3 words of output image. Each word is
composed of 16 bits.
Thermocouple/mV Input Module (1794-IT8) Image Table Mapping
I/O Image
Input Size
1 to 11 Words
Output Size
0 to 3 Words

Thermocouple/mV Input Module (1794-IT8) Read

13 12 11 10 09
15 14 13 12 11
Module Image
Reserved
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
Overrange
Calibration Status
Calibration Mask
Thermocouple Type
Thermocouple Type
08 07 06 05 04
10 07 06 05 04
Reserved
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 Input Data
Underrange
Configuration
03 02 01 00
03 02 01 00