Rockwell Automation 2705 REDIPANEL KEYPAD MODULE USER MANUAL - Manual (Page 32)

Chapter 6
Operating Modes
6–2
Numeric Data
Numeric data appears on the right–hand side of the display in the eight
right–most character positions. These positions display eight digits (seven
for negative numbers). The decimal point, if used, does not require an
additional character position.
ASCII Data
Text starts on the left–most element. Text is displayed left to right.
Display Stored Message
A maximum of 16 ASCII characters can be displayed when using a stored
message. What is shown on the display is controlled by the DM bit in the
Output Image table.
When DM=0, only the first eight ASCII characters show up on the left hand
side of the display and the right–most positions of the display show the
numeric data.
When DM=1, all 16 ASCII characters are displayed and no numeric data is
displayed.
ASCII Message Display
The ASCII message is stored in the PLC and moved to the Output Image
table of the Keypad Module to display the message. Each word defined in
the Output Image table, as alphanumeric characters, can hold a numbered
code for two characters. The PLC program can also be used to send up to 12
ASCII characters to the display. Note – Refer to the Appendix for the
alphanumeric sub–set that the Keypad Module can support.
The first word of alphanumeric characters in the Output Image table
represents position one and two of the Keypad Module display when looking
left to right. The rest of the Output Image table words assigned to the
alphanumeric characters follow the same pattern, Word 2 = positions 3 and 4,
etc. When the DM = 1, more than eight ASCII characters can be displayed
on the Keypad Module. See chapter 7 for an example of an I/O Image table.