Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 35)

Getting Started with Your ASCII Module
Chapter 2
2Ć28
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-3 mode and observe the
transferred data by displaying the contents of the block transfer read file.
You must alternate cables that connect to channel B of the industrial
terminal, one cable for alphanumeric mode, the other for PLC-3 mode.
You will simulate the action of an input bit through the PLC-3 front panel
to enable a write block transfer.
You will use the following procedures.
In Procedure You Will
P1 Connect the 1770ĆCB cable, and set your industrial
terminal to alphanumeric mode
P2 Enter your data
P3 Connect the 1775ĆCAT cable, and set your industrial
terminal to PLCĆ3 mode
P4 See how data is stored in the data table
Even if you are familiar with these procedures, read them completely. If
you deviate from these procedures, proper operation may not occur.
If you have not already done so, load the “Getting Started Program”
(Figure 2.8) into processor memory.
Procedure 1
Set Your Industrial Terminal to Alphanumeric Mode
1. Turn on the industrial terminal.
2. Connect the 1770-CB cable to channel B of the industrial terminal.
3. Select alphanumeric mode.
Press [SHIFT][MODE] 2
The CHANNEL ACTIVE LED on the module illuminates.
Reading Data from Your ASCII
Device