The C-more HMI (human machine interface) is one of the best values in industrial HMI. Not only do you get competitive pricing but the ease of setup and use will save you even more.
In this video, we show how to log the data collected from the PID Faceplate Trend Graph to do a deep evaluation of a PID process. This data logging can be useful in the testing or improving a PID control system process from your connected device.
This video is part of the C-more HMI setup videos that give direction on how to set up, use and maintain your industrial HMI.
C-more HMI: Collecting Data and Data Logging Overview
C-more HMI: Collecting Screen Captures
C-more HMI: Alarm Data Logging
C-more HMI: Message Database Data Logging
C-more HMI: Line Trend Graph Data Logging
C-more HMI: PID Faceplate Trend Graph Data Logging
With the C-more HMI you can log data from the PID Faceplate Line Trend Graph into a CSV file. This file logs for 24 hours and a new file is created each day at midnight. The file can then be stored on an external USB or SD Drive. You can simultaneously log up to 16 PID Faceplate Graphs or the regular Line Trend Graphs. You can store up 999 Log files but there is a limitation with the naming. Let’s say that we have this PID Faceplate Line Trend Graph on this screen. The Screen Name is this and the PID Faceplate Object has this name. If we look at the resulting file name, it will display like this. With this being the Screen Name, this being the PID Faceplate Graph Object Name and this being the date but internally in C-more that shortens into this. Here is where the limitation comes in. You can only have 999 files at one time with the same first 4 characters. So, if you need to log multiple PID Faceplate Graphs, make sure to name each screen that has a logging PID Trend Graph, with unique first four characters of the Screen Name. Now, if you have multiple PID Trend Graphs logging on the same screen, the internal file will be the first 2 letters of the screen and the next 2 letters will come from the PID Faceplate Name. With this just make sure that the PID Faceplate Graph Names have unique first 2 characters. Now to turn on logging for a PID Faceplate Graph Object it couldn’t be easier. Open your PID Faceplate Trend Graph Object. Select the option tab and then check this box. Here you can see what will be the name for your Log file and here you can select where to store this Log file. To show you how these files will look, I will run this in simulator. I am going to open up my virtual SD1 card. Here is the log folder and here are my files. I am going to select to open this with Excel and that is how it looks. With C-more you get the advanced HMI tools to get the job done, but at the right value. To see more videos on collecting data in C-more, see this playlist. To find out more on the C-more line, click here and also make sure to subscribe to our channel here to keep up to date with our helpful tips and products.