Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 68)

5–7 Introduction to AUX Terminal Configuration
Publication 2755-833
Field Types
Each configuration parameter has a field associated with it that
shows the current setting. You can change the value or setting in any
field. There are two main types of fields: select fields and edit fields.
A third type, select/edit numeric field, is a hybrid of the other two.
Select Field
Select fields have a fixed group of settings from which you can
choose. For example, the Laser Light Mode is a select field and the
available settings are On, Triggered, or Off. An example is shown on
the left.
Edit Field
Edit fields are data entry fields which allow you to enter strings of
characters. The length of the highlighted box determines the size of
the field. An example is shown on the left. The three types of edit
fields are:
•
ASCII character (decimal value 0 to 255)
ASCII fields display the decimal value followed by the ASCII
character equivalent, for example: 013 = CR. You can enter:
– a decimal value; the software displays the ASCII
equivalent character
– an ASCII (non-numeric) character such as T; the software
displays the decimal equivalent
– a [Return] when the field is empty; the software displays
NONE which means an ASCII value is not defined. The
decimal value of 255 is interpreted as NONE
•
numeric values
•
text strings (including non-printable characters, see Appendix I)
Select/Edit Numeric Field
A select/edit numeric field, as its name implies, behaves as both a
select field and edit field. That is, you can either enter a numeric
value from the keyboard, or use the space bar to move through a list
of available values.
Changing Fields
To change the contents of a select field, edit field, or select/edit
field use these keys: