Missing decimal point

[308guru 0]

I have an existing piece of equipment that I would like to retrieve some data from. I need to run a gauge R&R but I can't get all of the information through the panelview. It's a pressure decay test and I need the pressure at the start of the test, which is not displayed. It's an older piece of equipment, and with my limited programming experience, I don't want to change anything at this point. I can't afford any down/learning time if I screw something up. The PLC is a an ML1500 and the panelview is a 300. I can't seem to figure out how the correct info is being displayed. The pressure is displayed out to 2 decimal places (ex. 75.32 psi) and I can't figure out where the 2nd decimal is coming from. The transducer is a 0-100psi with 0-10V output. I found the SCP command in the program which takes the input from the transducer 0-30600 and scales it from 0-1000. That value is stored in N11:13. There is another MOV command that moves N11:13 to N11:5. The panelview displays N11:5 but scales it by .1. The panelview screen shows that location to be a 1 place decimal. If I bring up the properties of that value, it shows the number of digits to be 5 with 1 decimal place and zero fill to the left. As I watch, the display clearly shows 2 decimal places, and without doing so, it would seem that the resolution wouldn't be fine enough. Where is the 2nd decimal place coming from? I did have to import the panelview program into FactoryTalk View from a .pba file type. Would this transition lose anything that would indicate the 2nd decimal? Thanks. Edited 21 Feb 2011 by mckeand13

[b_carlton 61]

Can you post the original PBA? Indicate exactly which value is showing 2 decimal places of information. Which display are you describing, the original Panelview or your Panelview Plus? Edited 21 Feb 2011 by b_carlton

[308guru 0]

PBA file is attached. There is only 1 screen. Any of the displayed pressure values are showing 2 decimals. PBA file.zip

[b_carlton 61]

I don't see how a display, running on the program in the PBA, could show two decimal positions. Was the PBA created by an upload from the Panelview? Have you re-downloaded from thei PBA from Panelbuilder? I'm trying to verify somehow that the display you observed really and truly was running the program you posted. Otherwise, I don't know.

[308guru 0]

The machine was inherited from one of our other companies so I don't know the background on it. I had a company backup the programs before we moved it. I don't know for sure if this is the program that is currently running or not. Even if the panelview program was set to show 2 decimal points, where would that 2nd one come from? The number starts as a 3 digit integer. it is then scaled by .1 so other decimal points exist. Is that thinking wrong?

[b_carlton 61]

Your seperator in the address looks like a semicolon instead of a colon. Is that right? Is this a language setting thing?

[308guru 0]

If I double click on the ###.# location on the screen to bring up the properties, It seems like it's a tag or variable. Not sure if I have that terminology correct though. In the "text" window where you would normally type, it shows a bunch of information but it's all one thing. I can't edit any of it, or select just a portion of it. It shows /*N:5 lwr_ch_psi ZEROFILL DP:1*/ If I double click on that text, it brings up the Numeric Variable window. That shows that the tag is lwr_ch_psi and all of the information driving the # of digits, decimal places, and zero fill. That much the be info generating the previous screen's text string.

[b_carlton 61]

By the way - I saw in a post on another forum that the semicolon is acceptable, PB32 just treats it as a colon. But I'm looking at the screen in Panelbuilder32. When I double click on the '##' I get a numeric data display object which looks nothing like what you show. Are you showing the project after being imported into Factorytalk ME?

[308guru 0]

Yes, I am showing it after import. I only have FactoryTalk ME, not Panelbuilder. Is that where things are getting screwed up? There is a co-worker who has Panelbuilder. I'll have to look at it on his computer so there is no conversion happening.

[308guru 0]

I need some help uploading the program. The setup is an ML1500. Two connections coming out of that. One from the DB9 port on the left side a NET ENI One from the front right side 9pin min din to the first of four 1761-NET-AIC cards. That first one is connected to the next card. Each of the remaining three are connected to the panelview 300. There is also a larger panelview 550 which according to the wiring drawing shows that it's coming off the first 1761-NET-AIC, but I didn't see the connection. Can I connect to the plc or panelviews over ethernet via the NET-ENI card? I uploaded the configuration of the NET-ENI to get the ip address. I then changed my ip address of my computer to 1 different on the last segment of the ip address. I can't connect to the plc though. I'm trying to do two things. 1) Get online with the PLC. 2) Upload the panelview programs

[b_carlton 61]

Getting online to the PLC should be okay. Assuming you do have a unique IP installed in your computer and the current RSLinx and RSLogix500. We actually ahve one working this way in a new machine we are building. I don't know about the Panelview and the DH485 network. I haven't used one. Does the Panelview have two DH485 ports?

[308guru 0]

I finally got it figured out. Uploaded the PLC program from the ML1500. Checked the scaling and it was 0-10,000, not 0-1,000 as I originally thought. Uploaded the HMI program (using a 1747-UIC and PM-02) and the location uses 5 digits with 2 decimals. The company I paid to back up the programs before a move just send me files they had and didn't do the upload as expected. I was working from their files assuming they were the latest. Thanks for the help.