Rockwell Automation 1770, D17706.5.16 Ref Mnl DF1 Protocol Command - Manual (Page 208)

12–5 Uploading and Downloading with A-B Processors
Publication 1770Ć6.5.16 - October 1996
Procedure 2
The processor can be in any mode while uploading.
1. Verify the processor type using diagnostic status. (For more on
diagnostic status, see page
7–6 .)
2. Place the processor in Upload mode using upload all request.
(For more on upload all request, see page
7–33 .)
This command returns a reply which contains the addresses of:
•
PLC-5 memory segments that you can upload
•
memory segments that can be verified after upload
3. Upload the memory segments specified in the reply packet of
upload all request using read bytes physical. (For more on read
bytes physical, see page
7–19 .)
Read bytes physical
A single segment of PLC-5 memory may require more than one
read bytes physical. You must calculate the PLC-5 physical
address for each command.
When you store PLC-5 memory information to an archive file in
your computer, you must also store this information to perform
the download procedure:
•
physical addresses from where the memory information came
•
number of bytes uploaded from each PLC-5 physical address
contained in read bytes physical
4. Exit Upload mode using upload completed. (For more on upload
completed, see page
7–34 .)
5. Verify the upload by repeating the steps 1 and 2, but instead of
writing the data to a file, compare it to the data that you
previously stored in the file.
6. Terminate the processor upload operation using
upload completed. (For more on upload completed, see page
7–34 .)
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