Rockwell Automation 2755-DM9, -DM9E High Speed Decoder - Manual (Page 38)

Chapter 4
Configuring Your Decoder
4–11
Type in the new data and press the [RETURN] key to close the field and
enter the data.
Note: Pressing the [ESC] key while you are entering data in an edit field will
return the contents of the field back to the original contents prior to editing.
When you enter a value in a field that requires an ASCII decimal value, you
have three options:
1) You can enter the decimal (numeric) equivalent value (refer to Appendix
C). After entering the decimal value, the selected ASCII character will be
displayed.
2) You can enter the ASCII character (non-numeric only) such as “T”. The
decoder will automatically enter the decimal equivalent value (T = 84).
3) If you press the [RETURN] key when the field is empty, “NONE” is
displayed (no ASCII value is defined). A decimal value of 255 is also
interpreted as “NONE”.
You can enter non-printable ASCII control characters into the following edit
fields:
•
Source Identification Message
•
Header Message
•
No-Read Message
•
Match Table Entry
To enter non-printable ASCII control characters (ASCII 0 through 31) into a
text string, refer to Table 4.B. For example: to enter carriage return and line
feed control characters, you would enter %M%J. The decoder will interpret
%M%J as the ASCII control characters CR and LF. The % character is
equivalent to ASCII 37 (decimal). Non-printable control characters are
always entered as a two character sequence and the second character must be
listed in Table 4.B. To enter the character %, you must use %%.
Note: Some fields have restrictions on the type of data that you can enter.
For example: numeric values only are allowed in the inter-scan timer field.
If you attempt to enter an invalid character, you will hear a beep. Numeric
values are also checked for range (min and max values) when the [RETURN]
key is pressed. An audible beep indicates a value is out of the specified
range. To correct an entry, you can either:
•
Delete the incorrect entry by using the backspace, left arrow, [CTRL] [L],
or rubout keys.
•
Press the [ESC] key once to return the field back to its original contents.