Robb B
Lifetime Supporting Member
Hello all,
I am currently working on a project involving SLC 5/05's. There is two treating vessels, #1 and #2. #2 was recently (2008) upgraded from pneumatic systems to electronic (temperature, pressure, vacuum, etc). Now we are upgrading #1 to the same electronic controls. #1 is a little fancier with a larger PanelView Plus 1250, and we eliminated all the toggle switches and indicator lights by moving them into the HMI. To get a starting point for this upgrade, we used the existing code on the panelview 650, scaled the display size, and added a few more pages. Now, on the PLC, we weren't given a copy of the final file that went into the SLC 5/05 back in 2008, but we had some (what we thought were) previous revisions of the file that the boss declared "good enough to get started" with...
I believe we are now faced with a situation where we have 3 versions of a file: the "original" file we started the #1 upgrade with from 2008, the modified version of the aforementioned file, and now I may have found the "final" version of the file that went into the 2008 upgrade.
When performing an UPLOAD from the PLC of the upgraded #2 system to our laptop, RSS Logix 500 said it could not find the matching file to use. We browsed through the collection of folders until it said we had a match. It then went online, and all seemed ok. I checked with the boss, and he said to use this file if it matches. Well, I have no way to verify that it does match what's supposed to be in the machine. I was not involved at the time of the upgrade in 2008.
My questions are regarding the actual RSS files, RS Logix 500, and upload/download operations.
1. Does RS Logix perform any sort of CRC or bit by bit comparisons to verify that file contents match exactly between what is stored on the PLC and what is on a local disk? What criteria is used to determine an actual "match" between the onboard logic and a local file? Thus far I believe it to consist of matching the processor name only...
2. Is there any way to "merge" two files? (other than having a copy of both open and moving everything different in a comparison)
3. What sort of information inside the logic ladder will NOT be copied from one file to another? We have so far found various strange "holes" in information such as PID's with no tuning parameters, missing comments and descriptions (that are in original file).
Any further clarification needed, please ask! I don't have access to the files (they are at work) but can relay or gather information as needed.
I am currently working on a project involving SLC 5/05's. There is two treating vessels, #1 and #2. #2 was recently (2008) upgraded from pneumatic systems to electronic (temperature, pressure, vacuum, etc). Now we are upgrading #1 to the same electronic controls. #1 is a little fancier with a larger PanelView Plus 1250, and we eliminated all the toggle switches and indicator lights by moving them into the HMI. To get a starting point for this upgrade, we used the existing code on the panelview 650, scaled the display size, and added a few more pages. Now, on the PLC, we weren't given a copy of the final file that went into the SLC 5/05 back in 2008, but we had some (what we thought were) previous revisions of the file that the boss declared "good enough to get started" with...
I believe we are now faced with a situation where we have 3 versions of a file: the "original" file we started the #1 upgrade with from 2008, the modified version of the aforementioned file, and now I may have found the "final" version of the file that went into the 2008 upgrade.
When performing an UPLOAD from the PLC of the upgraded #2 system to our laptop, RSS Logix 500 said it could not find the matching file to use. We browsed through the collection of folders until it said we had a match. It then went online, and all seemed ok. I checked with the boss, and he said to use this file if it matches. Well, I have no way to verify that it does match what's supposed to be in the machine. I was not involved at the time of the upgrade in 2008.
My questions are regarding the actual RSS files, RS Logix 500, and upload/download operations.
1. Does RS Logix perform any sort of CRC or bit by bit comparisons to verify that file contents match exactly between what is stored on the PLC and what is on a local disk? What criteria is used to determine an actual "match" between the onboard logic and a local file? Thus far I believe it to consist of matching the processor name only...
2. Is there any way to "merge" two files? (other than having a copy of both open and moving everything different in a comparison)
3. What sort of information inside the logic ladder will NOT be copied from one file to another? We have so far found various strange "holes" in information such as PID's with no tuning parameters, missing comments and descriptions (that are in original file).
Any further clarification needed, please ask! I don't have access to the files (they are at work) but can relay or gather information as needed.