Rockwell Automation 1771-TCM TEMPERATURE CONTROL - Manual (Page 12)

1–5 Interfacing with the Temperature Control Module
Publication 1771Ć6.4.5 - January 1997
To establish a TCM project file, you must enter the starting address
of this interface area for each Temperature Control module. (See
Chapter 4 for more information.) The example ladder logic in
Appendix C of the Temperature Control Module User Manual
(publication 1771-6.5.120) uses N7:0 as the starting address for this
interface area. To keep things simple, we recommend using word 0
of a file as the starting address. However, as long as you provide the
indicated word offsets, the interface area can start with any word in
an integer file. If you install multiple Temperature Control modules
in your PLC system, you will need to assign a separate integer file
for each of them so that only one uses file N7. You will have to
make the corresponding address changes for each additional module.
Note that no areas are designated for calibration read or write blocks.
Calibration is an off-line function that the Temperature Control
software does not handle.
For details on how the example ladder logic program uses words 1
through 5 and 9, refer to appendix C of the Temperature Control
Module User Manual (publication 1771-6.5.120). Your ladder logic
program does not have to use words 1 through 9 in the same way as
in the example ladder logic program. However, you must use words
0 and 10 through 614 exactly as indicated.