Downloading without changing data files

jmsmoreira

Member
Join Date
Jun 2011
Location
Maia
Posts
188
Is there anyway of downloading a program to a SLC5/05, without changing the values of the data on the data files.

I have tried to use the static protection, but is still puts the values to 0 when downloading...
 
No but there are workarounds.

You can go online with one instance of RSLogix, and drag and drop the data files into another instance of RSLogix in order to get a snapshot of the data. You will have to do this for entire files in order for it to work.

Then download the new file. This won't capture changes that might occur to the data between the time you copy it and the time you download so it is not perfect, but better than nothing.

Another workaround would be to set up a DDE topic and use an external application like Microsoft Excel to capture the data before the download, perform the download, and then use Excel to send the captured data to the SLC.

This workaround requires more trouble to set up, but has the advantage of being more flexible allowing you to pick and choose specific elements within any file(s) to capture. It can also be much faster, depending on the locations of these captured elements and your VBA coding skills.
 
If you want to download a program because of code modifications, then do the code changes online. It is not as tedious as one might think. You can do copy-paste from the offline to the online project of entire rungs.
When you accept the edits, it happens instantanously, on the fly so to speak.
It is one of the advantages of AB PLCs.

edit: And, you can test and un-test on the fly. If you download a complete program, you have no way to un-goofup in a hurry.
 
Last edited:
I have had success with just copying and pasting the ladder code.

Go online with your program. Open a seperate edited version of the program. Then copy and paste the affected subroutine or main routine on top of the existing code. Be sure to remove the original code when you have finished pasteing.

This method is a little cumbersome but does not changed the data tables.
 
Thanks guys,

As I was guessing, there is no "simple" way of doing it, but the copy/paste online edit seems the better way of doing it.
 

Similar Topics

Software: RS 5000 v18.02 This is my second time running into UNK instruction. Rung is in e mode, with UNK instruction replacing original MOV...
Replies
5
Views
10,457
I have a customer with a plant using a Compactlogix L43 and a stack of Ethernet comms to drives and so forth. They want me to add another drive in...
Replies
1
Views
4,342
id like to know what would be the best and cheapest way to download an application into a PV700 or PV1000 i have an application that have been...
Replies
7
Views
4,028
Hello All, I have a problem which may just be because of lack of familiarity with Allen Bradley. I have an off line project in RSlogix 5000 which...
Replies
5
Views
12,596
I have a L82 system setup redundant that i need to download a lot of programs to in a critical environment. What is the process to do this and...
Replies
10
Views
288
Back
Top Bottom