Hello there! I'm new to PLCs and seeking some assistance. My old Mitsubishi FX-48MR seems to have lost its program, possibly due to a dead battery. I managed to obtain some files from the original programmer who worked on it in the 90's. The files come in .gcc, .gct, .hdr, .nam, .prg, and .prm formats. I'm looking for someone who can convert these files into a format that my electrician can use to restore the program in the PLC. My electrician has the necessary cables to communicate with the PLC and uses Melsoft for access (uncertain about the version). Thank you for your help! - Toby
If you are using GXDeveloper or newer software, the FX PLC is not compatible and requires Medoc for programming. It is a DOS program that may only be read by Medoc. An older version of GXDeveloper may allow for importing, but versions V7 and above do not support it. While the PLC is outdated and no longer supported, it can be upgraded to the newer FX range. To make the transition, it is essential to have a printout of the original Medoc file.
The FX is seamlessly integrated with GXDeveloper software. While my recollection is a bit hazy, I believe those file extensions are associated with a GXDeveloper project. This compatibility between the FX and GXDeveloper enhances project efficiency and collaboration.
The version of GXDeveloper I am using does not support the older FX series, only FX0 to FX3. The provided file is intended for Medoc and is not compatible with GX. It is uncertain if previous versions of GXDeveloper can handle this file, but even older software like GPP cannot import it.
During the installation process, the experienced GX Developer inquired about your interest in importing Medoc files. With a collection of Medoc programs in my possession, I opted for this option. GX is proficient in programming the legacy FX, treating it as an FXU model.
When programming the older FX model PLC with a DB25 connector using GXDeveloper, select the FXU/FX2C type. You will require an SC-09 cable, which comes with a DB25 connector for the older models and a Mini DIN for newer FX models. The project file provided is formatted like a GXDeveloper project, with each project contained in its own directory for easy organization.
Hi Toby! First off, welcome to the world of PLCs. Now, you're indeed dealing with a quite outdated but sturdy system. Your file formats hint towards the use of GX Developer, an older Mitsubishi programming software. These file formats might not directly open in your electrician's Melsoft, as it sounds like he possibly relies on a more recent version. I recommend locating a copy of GX Developer which can open these formats, where you can then save them in a format that Melsoft can handle, likely .FXGP. Remember, being meticulous whilst converting is crucial as PLC programs are sensitive to changes and errors can be hard to spot. Good luck, and feel free to seek assistance here anytime!
Hey Toby, it sounds like you're in for a bit of a project, but it's definitely doable. The file formats you mentioned (.gcc, .gct, etc.) are likely parts of the original program, which might have been broken down into these formats for storage or transfer. If I recall correctly, Melsoft should be capable of working with .prg files. However, it's crucial to use the same or a later version of Melsoft that was used for the initial programming to avoid compatibility issues. Could you perhaps try to consult with the original programmer about the Melsoft version they were using or look through any of their documentation? Second, if the battery is indeed dead, you might want to consider replacing it before doing any programming to avoid this issue cropping up again down the line. Best of luck!
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Answer: Answer: To convert the provided .gcc, .gct, .hdr, .nam, .prg, and .prm files into a format usable with Melsoft, you may need to use a conversion tool or software that can interpret these file types and export them in a format compatible with Melsoft.
Answer: Answer: The loss of program in your PLC could be attributed to a dead battery, which is a common cause for losing program memory in PLCs if the battery backup fails to maintain the memory when the PLC is powered off.
Answer: Answer: Yes, your electrician should be able to restore the program in the PLC using the files and Melsoft access, provided the files are converted into a compatible format and the electrician is familiar with programming and communicating with the PLC using Melsoft.
Answer: Answer: While the specific version of Melsoft required for accessing and restoring programs in a Mitsubishi FX-48MR PLC is not mentioned, it is advisable to ensure
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