colandra

You should be ok with the USB cable. Did you change the the connection settings to USB From there you can test the connection as well. In the connection1 you select USB, PLC module, and No Specification. You can then press connection test, and it should indicate it sees the PLC. If this does not work try a different USB cable The software defaults to a RS232 serial connection, most people use the FX-USB-AW cable for mini din communications. See how you go Colandra          

Hello, What PLc are you using ? Can you provide more detail as to the purpose of the PC. Is it for programming and download, or some other function. GX Developer is discontinued, and no longer supports, still functions mind you. GX Works 2 is no longer available as a standalone package. You might consider GX Works 3, which comes with GX Works 2 included. Some idea of you application would be good as well Colandra    

Are you using a FX3U-Enet module. If you are there is a configuration tool you need to change it in the module directly. I have attached it, this may help. Colandra       FX+Configurator-EN+1.40.zip

Please advise what model PLC you are using. I would check the system variable range as you may be trying to use a device that has been allocated to the system variable range. I have had the same waring come up in the past, and this was the cause. However, this is not the only cause for this waring to appear. Let me know how you go, good luck Colandra    

Ting, Q Series is at end of life from a production point of view. Spare parts will become harder to get, and more expensive, in the very near future, and this process has already started. The IQR is priced very well, sometimes even cheaper than the Q on certain modules from my experience. The IQR platform has been widely adopted, I use it myself for our project work. We have moved away from Q Series all together. Not knowing your applications, it is hard to comment on CPU selection. As with any equipment of this nature, customers and their needs, drive development of any product, true the Q series is a  very capable PLC, the IQR is the next evolution of a stable platform. Many customers are future proofing their plant in the form of PLC selection and upgrades. The availability of spare parts is a driving factor, more so than functionality. Hope this assists Regards Colandra      

HMI.JR, what programming software are you using please. Colandra

Not wishing to be silly here, did you connect 24v to the module itself. I have had people miss this before. No power no output   Colandra

Second line should be TO K0 K1 D70 K4   Regards   Colandra  

Monitor your PLC power supply. If there ia a spike or some sort of transient this can cause the system to shutdown and restart. May help, worth considering. have changed out the key components, and you still have the issue. It could be one of the other modules on the rack, networking module or analogue module would be the units to look at first. If one of these units are pulling the rack supply down, this will also give you the issue you describe. Also, if you have a large volume of VSD's in your plant you may be producing a high 5th harmonic. You need reactors on the incoming of the VSD units in question to reduce the system harmonic. EMC ration from VSD units in close proximity to the PLC can sometime cause issues such as described.   Regards   Colandra

A couple of possible reasons   1. The CPU battery has expired. 2. Base issue 3. Transient spike on the power supply. When you reload your software, make sure you do a PLC Memory Clear first to make sure there is no redundant code left behind Last possible option is the CPU has failed, but this would be most most unusual for a Mitsubishi automation product. The last thought for me is, and this one is right out there, but I have had the issue is harmonics developed by variable speed drives. If the  harmonic level in your power supply is high, usually the 5th harmonic, this can cause some very odd reactions with electronics in general. Just something to remember. Hope the above helps  Colandra   .

To confirm Win 7 64 bit is fine we use pro though, never had an issue with the FX-USB Drivers Colandra  

Attached are a set of driver files for you. This should help Colandra   fxusbdrv150.zip

Uchihalila,   Can you advise please what A series CPU are we talking about and what Q series CPU are you intending to use. Also, which programming software package was used to generate the A series program, or you use to look at the A series program currently. Thanks  

Aakash   Attached are a couple of pages for you to look at.   Note though, if C251 is used X0 and X0 are already allocated to C251. You would need to change the counter to C235 and not use C251 at all in your program.   Rewgards   Colandra

Aakash First seven inputs linked to the counters in the PLC. If you check the FX3U programming manual, available from mymitsubishi, there is a table which indicates the input identification and the input purpose purpose. There are various types of encoders you can use of course. The manual also shows you the HS counters, and the various PLC commands available to you. There is no cost to sign up to mymitsubishi, there is lots of information there, manuals, brochures and even cad drawings. A very good site resourse site. I use the European mymitsubishi myself. There is a Japanese site, but there can be some translation issues. No cost for downloading the information you need. There are some good conversion, and selection tools available there as well. Regards Colandra