Rockwell Automation 1771-KA2 Communication Adapter Module User Manual
Page 99
Station Interfacing
Chapter 8
8-7
Table 8.A
Diagnostic Command Summary
Command
Function
Diagnostic loop
Echoes transmitted data back in reply message
Diagnostic read
Copies up to 245 bytes of data from module
memory
Diagnostic counters
reset
Resets all diagnostic error counters n the module
Diagnostic status
Allows access to 28 bytes of processor and
module status information
Other commands are available for communication with other processors,
but will return an error code if sent to a PLC-2 family processor.
Indications of Upload, Download (Earlier revisions)
If you are using a revision of the 1771-KA2 module before revision D, or
a revision of the 1770-T3 terminal before revision G, and are uploading or
downloading, the 1770-T3 terminal will:
display a mode select menu and a communication fault message
clear all force instructions
(Later Revisions)
When you connect a 1770-T3 terminal (revision G or later) to a
1771-KA2 module (series A, revision D or later) and perform program
uploads with the 1770-T3 terminal in the PLC-2 mode, the terminal does
the following:
Uploads
1.
Displays the prompt:
UPLOAD IN PROGRESS - PLEASE WAIT FOR COMPLETION
2.
disables the PLC-2 mode
3.
displays the prompt:
UPLOAD COMPLETED - PRESS ANY KEY TO CONTINUE
4.
re-enables the PLC-2 mode and forces are maintained after you press
any key