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trm

Accessing D512 - D999 in FX3U problem

16 posts in this topic

Hi ! I have the following problem: I use a FX3U-16MR PLC with 2xFX3U-485ADP-MB + 1xFX3U-ENET GX Developer 7.01 and when i try to access data registers from 512 to 999 i get error AT COMPILATION: Error: F1028 Access to system addresses is denied Error: F0137 Illegal device used or symbol not valid I can configure them to be latch (by default) or non-latch. I can see them as available 0-7999 (actually 0-199 non-latch + 500-7679 latch) 0 - 199 non-latch (can be conf. to be latch) 500 - 1023 latch (can be conf. to be non-latch) 1024 - 7679 latch (latch only) I contact my local dealer and support , but they can't help me till Monday and also they use mostly GX Developer ;( And with GX Developer it works. Thank you in advance for your time and help.

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Yes that HELPED ! I knew there were system/reserved space of registers, but forgot where this is configured. Thank you a lot ... Tell me how can i send you a pack of beer hh and preferred brand :P :) :D

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The better we can drink together a good bulgarian wine, when I'll visit Bulgaria

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Hehe :) OK, no problem :D :P :) ps: you have PM.

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Private PM's. I thought this was a forum - sharing knowledge and all that. Bad form Inntele

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Goody, Yes, It looks really ugly, if you do not take into account that trm has sent a similar question as a personal message, which was seen in the first place and to which I replied, and then here I have informed the questioner about it. And it was a good move on his part, because the answer was given promptly. No other purposes my message was not intended. Very good and pleasant, that in this case, the person appreciates the efforts and grateful for the answer, because, alas, so is not always, and in some cases just the opposite happens. I am willing to share knowledge and experience with any person, to whom my experience is interesting, but will do it only voluntarily, selectively and in a form in which such help will be maximum convenient. Duplicate the given answer in the thread does not see the point, because both the question and the answer is very simple and and has repeatedly been heard in the forum. For the preparation of the responses I waste my time, which do not have in abundance. Therefore, the observations and with your hand, and by JRoss think at least not tactful.

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Hello! I am having the same error when I try to rebuild the project. I am using GX IEC Developer V7.00 CPU is FX2N-64MT-DSS with following expansion moduls: FXon-8EX-ES 2X FXon-8EYR-ES 1X I have looked a solution for this problem, but I haven't found it. So far I know this much, that I have to define variable ranges from the Extras menu -->Options --> System variables. As much I understand, there must be show free memory addresses, but I don't know, witch are free. From the Extras menu I can choose an command called "Find Unused Variables", but it doesn't work. It says I have to rebuild my project. Can I upload the correct configuration from PLC somehow ? With Best regards Goner

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Goner, 1. Before to start a work with PLC, is right to read the documentation. That allow you to understand the software and PLC, with which you work, and to save a time, which is money, of other specialists. 2. Such answers gives here and not in PM. 3. "To rebuild project" means the same as to recompile. This action is not destroy the program, it just assign the updated addresses to your program, according to GVL and system variables, and/or change the command list, if you've changed the program before . At the last case, your program will be rebuilt according to the structure of current POU, activated in the ProjectTask. 4. You can upload the program from PLC to a new session of GX IEC, but you can get a Melsec code only. The better will be to save the project, which has not changes, with a new name, and continue to work and make changes in the new project as you need.

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Hi, this program was sent to me by the the machine builder. I would like to go online to check, if the encoder on the machine is working normaly or not. When I try to go online, then program says to me, that I need to rebuild the project. When rebuilding the project, then I will get the f1028 error. I found in the Mitsubishi Programming manual II chapter 8.5 Performance Specification of the FX2N© variable specification according to the PLC type that I have. I tried to change under Extras -->Options --> System variables the configuration, but it didn't work. I read "Melsec IL to IEC Ladder Conversion Utility", there was recommended in case of this error to reallocate the variables to area that is not used in the project. Alsou I found a refrence to "GX IEC Developer 7.01" IEC Programming and Documentation System page 64 , where is sample configuration for FX project. Is it correct configuration? I can try it tomorrow. Or what documentation do You recommend to read more, where could I find the solution? Goner

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Hi, it changes the whole picture... The problem may be due to the fact that the developer use another version of GX IEC than you. To avoid troubles you haven't to rebuild the project you've got from the developer, it's necessary to work with its copy only! Also, when you open the project, you haven't to update the libraries, if GX IEC offer this action, or to change anything before a verification of this project with the project in PLC. Verification can be performed with Project -> Transfer -> Verify. Only after that action will be subject to assess the presence and nature of problems, as well as building a plan for further activities with the program.

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Hi, I tried to do the verification. I got following messages. I tried to change Code Generator options (from Extras --> Options --> Project options --> Code Generation). Nothing changed. Any idea what to do next ? Goner

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Hi, What I can say... Try to rebuild a copy of the program, then verify it again. If the verification find discrepancies in the program code , call up to developer, that he said, what settings must be made in GX IEC, or come to your object and himself check the problem with the program operation.

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Hi, I tried to rebuild. Got the same error that I talked about before (f1028). I made a screenshot of the initial configuration, when I opened the project. On rebuild I got following errors. I changed the configuration to Then I got following error about %MD0.0 So far I got with my try to rebuild. Goner

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Hello, I had some luck this week and I got everything working. In the end I used MELSEC GX Developer. Then I had no problems. Verify was ok, diffrenses where only in memory. Thanks for help. Goner

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