Rockwell Automation 2755-DM9, -DM9E High Speed Decoder - Manual (Page 9)

Chapter 1
Using this Manual
1–2
You do not require any special knowledge to read this manual and follow its
instructions. If the decoder will be used to communicate with a computer or
PLC
TM programmable controller, we assume you are familiar with
communication devices, communications standards (RS–232, RS–422,
RS–485), and communications terminology. In this manual, we describe the
commands that a host device can transmit to the decoder and the command
responses sent by the decoder. We do not describe how to create PLC or
computer programs for generating the commands.
Some chapters in this manual contain examples of how to enter data or
commands. The following conventions are used:
•
A symbol or word in brackets represents a single key you would press.
These include keys such as [RETURN], [SHIFT] or [
A ].
•
Punctuation, such as commas, and symbols such as “/” would be entered
as shown.
•
ASCII codes are represented by either their mnemonic (CR, ETX, LF,
etc.) or their decimal number equivalent (CR =13, S=83, etc.). Refer to
Appendix C for a listing of the ASCII codes.
Note: When the [RETURN] key is specified, this is the carriage return
function of your keyboard. This key may also be labeled ENTER or use
some other symbol.
We have included numerous examples of CRT displays. All CRT displays
are shown inside a box with a double lined border. We have reproduced
these screens as accurately as possible. However, due to legibility and space
requirements we have modified some of the spacing.
When describing the programming terminal used to configure the decoder,
we make reference to arrow keys. If you use an Allen–Bradley Industrial
Terminal (Catalog No. 1770–T1, –T2, or –T3), you do not have arrow keys.
Use the [CTRL] and [U], [D], [L], or [R] keys for the Up, Down, Left, or
Right cursor functions, respectively.
Intended Audience
Conventions Used