Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 21)

Getting Started with Your ASCII Module
Chapter 2
2Ć14
If you are still having trouble, refer to “Testing the ASCII Module and
Cables,” to verify communication between the ASCII module and the
industrial terminal. If you suspect a cable problem, check the 1770-CB
cable (Figure 1.4).
Then try again, starting at Procedure P1.
Figure 1.4
Minimum Connections in the 1770ĆCB Cable
1
2
3
7
18
25
1
2
3
7
18
25
ASCII Module
Interface Port
Industrial Terminal
Channel B
Connectors:
25Ćpin DĆShell
Male Connector
Cable Kit
1770ĆXXP (each
end)
Cable:
Belden 8723 or
equivalent
* In cable but not
required for ASCII
module
* Protective Ground
Transmitted Data
Received Data
Ground
11819
In this demonstration, you will load data characters into the write block
transfer file and observe how they are displayed. You will use the
industrial terminal in PLC-2 mode to load data. Then you will change the
industrial terminal to alphanumeric mode and observe the transferred data.
Writing Data to Your ASCII
Device