Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 17)

Getting Started with Your ASCII Module
Chapter 2
2Ć10
BUFFER FULL: Normally off. This yellow LED indicator
illuminates when the input buffer becomes full.
CHANNEL ACTIVE: This green LED indicator illuminates when
the industrial terminal is on, properly connected to the ASCII
module’s interface port, and set for alphanumeric mode.
In this demonstration, you will enter data and observe how it is stored in
the processor data table. You will use the industrial terminal in
alphanumeric mode as an ASCII data terminal when you enter data. Then
you will change the industrial terminal to PLC-2 mode and observe the
transferred data by displaying the contents of the block transfer read file.
You will use the following procedures:
In Procedure You Will
P1 Set your industrial terminal to alphanumeric mode
P2 Enter your data
P3 Set your industrial terminal to PLCĆ2 mode
P4 See how data is stored in the data table
Later in this chapter and in chapter 3 you will combine these procedures
with others. The order in which you will perform them may vary.
Even if you are familiar with these procedures, we suggest that you read
them completely. If you deviate from them, proper operation may not
occur.
If you have not already done so, load the “Getting Started Program”
(Figure 1.3) into processor memory.
Procedure P1
Set Your Industrial Terminal to Alphanumeric Mode
1. Turn on the industrial terminal.
2. Insert the Alphanumeric Keytop Overlay (cat. no. 1770-KAA).
Reading Data from Your ASCII
Device