Host Engineering Forum
General Category => DirectSOFT => Topic started by: gsoliman on September 14, 2018, 03:17:29 AM
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I am planning to retrofit/upgrade the PLC of a 20 years old water deionizer control panel. The PLC is composed of a 9-slots DL205 with D2-240CPU, D2-08NA-1 input discrete modules, D2-08TR output discrete modules with Direct View DV-1000 display. The CPU and display unit are already defective. I believed the D2-240CPU and DV-1000 are no longer in production or are obsolete already. I was told the D2-250-1 can be used in place of the 240CPU. As for the display, the C-more Micro HMI are one of my option.
I have a very little experience with PLC programming. I just started few months ago and still struggling on learning but know how to navigate and work the ladder. I know how to download/upload a program to/from a PLC. My problem is how to identify things related to the display and edit/modify them to make them work with a C-more display.
I am looking for a freelance programmer that can help me resolve this problem. I am willing to compensate the person who could help me resolve this problem. If you think you have the skill needed for this work, please drop me a message.
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Do you have the source file for the PLC? If so replacing the 240 with a 250 or 260 is really easy. The DV1000 wasn't programmable, the code to drive it is in the PLC. I no longer have the software for the DL205 stuff as I sold my last 205 along with the software. If you don't have the source code file the task gets a whole lot more difficult!
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Hi Gary,
Thank you for your reply.
I have licensed copy of DirectSOFT 5 and yes, I do have the source file. Late yesterday I was able to get hold of a D2-250-1 CPU and was able to upload the source file in it using DirectSOFT 5 software and my trainer module and as you said it, it was really easy.
Now for the display, is a C-more EA3-S3ML-R display a good replacement for DV-1000? Will it also be simply plug it and play it or will it require programming?
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The C-More is way easier to work with than the DV-1000 but it must be programmed which is actually very easy. It is much more powerful too. C-More uses tags for memory locations in the PLC then you place objects like buttons, indicators, and text on as many screens as you need.
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How about the source file, does it need revision to work with a C-more display?
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The code to drive the DV-1000 will still be there but won't interfere, and unless you know what you are doing I wouldn't mess with it right now. You will need to identify the memory addresses used to enter data. The C-More basically talks to the PLC to request the data in the various memory locations and can write new data in. You could even have more than one C-More connected if you were using Ethernet.