Rockwell Automation 2705 REDIPANEL KEYPAD MODULE USER MANUAL - Manual (Page 39)

A–B
7 Chapter
7–1
Programming
This chapter describes the process of creating a program for the Bulletin
2705 RediPANEL Keypad module. The detailed listing of the program
example explains the ladder logic programming.
Applications for the Keypad Module are programmed in the Allen–Bradley
PLC controller. The module itself has an on–board message editor that can
create and store up to 120 single line messages. These messages are
triggered from the program in the PLC.
All operations of the module - inputting data, displaying a PLC register
value, displaying a message, and using the function keys - correspond to
fixed bits and word locations in the Input and Output Image Table of the PLC
controller. For example, depressing a Function Key sends a “1” to its
corresponding bit in the Input Image Table. Depressing the ENTER key
sends the number that the operator has entered through the numeric keypad
to a fixed word location in the Input Image Table. To display a register’s
contents you put that value into a word in the Output Image Table. To
display a message that is stored in the module, you send its message number
to a word in the Output Image Table.
The Input and Output Image Tables for the various combinations of Keypad
Module features and rack size configurations are listed after the
programming examples.
Chapter Objectives
Introduction Of Programming
with the Keypad Module