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  1. Past Hour
  2. Hello hello, may I have your experienced advice with GXworks3? I have to write an RS485 protocol into the FX5UC mitsubishi PLC with GXworks3. I have a guide of the protocol so I have all the information. I attached an image from Section 6.7 of the FX5UC serial communication guide (one of the GXworks3 e-manuals) and it shows a message that is quite similar to mine. If I am not mistaken, a single RS2 ladder logic block will do that full message. The other image shows some PLC configuration where I can define those headers and terminators, and sumcheck. Fairly straight forward.   Here's where it gets a bit foggy. For my needs: Each character of the message (DLE is a character, STX is a character, data is treated as all one character...) needs a start bit, 8 data bits, odd parity, and one stop bit. So DLE needs start bit, parity, stop bit, so does STX, and my data chunk, etc. Correct me if I am wrong, but I'll probably have to turn off header and terminator in the PLC config, and send those characters individually so the parity and stop bits are added. But what about that start bit? The config image I sent shows that I have no start bit options. I can't just add a header that is 1 bit (also correct me if I am wrong). It seems to want to send a full 8 bit header even if its all zeros and a 1 (00000001) which won't work for timing reasons. And because I will have to send each character individually, then I have to generate my own CRC bytes. But maybe I can handle that if you show me how to do some manipulations to add in my start bit.   So to start off, how would I add a start bit using ladder logic? The RS2 command does not seem to give me that type of access. Section 6.7 of the FX5UC serial communication guide (one of the GXworks3 e-manuals) nicely explains how to do the communications over RS485 but again, no start bit or CRC options.
  3. Today
  4. CC-Link AD/DA IQ-R

    Hello everyone, I am studying Mitsubishi R-Series PLC with GXwork3. I don't really understand communication using CC-Link. Below I have the module configuration that I use. My hope is that the Digital operation value of the AI module is stored at addresses D0-D32. and I sent AO to address D100-D132.  can someone guide me to give me an example of how to set parameters and create a program. thanks you
  5. Port 0, parameter 571 is "Preset Speed 1" and its default value is 5. Since this sounds like a new installation, it's a fair bet that value hasn't been changed. Check the rest of your configuration to see if any of the drive's pre-set speeds are active.  One of the first thing I do when troubleshooting speed control problems is put the drive in manual and see if it will respond properly to speed commands from the HIM. If so, the problem is likely somewhere in the drive configuration or Logix code. Sometimes I find that someone else has already put the drive in manual, and that's actually the problem. Assuming the drive runs properly from the HIM and we therefore suspect drive configuration issues, check the following: What is the Speed Reference for the drive set to? This should be Port 0, parameter 545, "Spd Ref A Sel", and the default is Port 1, the HIM. If your intent is to control speed commands from a Logix controller on Ethernet, the "Internal Value" column of this parameter should be set to 877, which is "Port 0: Port 13 Reference". Start the drive from its normal start/stop/speed-reference source and while it's running, check Port 0, parameter 935, "Drive Status 1". This is one of the best ways to see what the drive thinks it's doing, and you're looking to see if the drive thinks it's accelerating, at speed, at limit, etc. Sometimes a current limit that should've been set to 10 gets accidentally set to 1.0, and the drive hits this limit and can't accelerate past it. In this case, the current limit bit in parameter 935 would be true, and you'd go check what the current limit is set to. (In my opinion, parameters 935 and 936 are amazing PowerFlex 750 drives troubleshooting tools). Because you're running at a fixed speed and the drive is not hunting for its speed reference setpoint, the problem is not likely to be in the motor control options but if you haven't found it in the suggestions above, it's worth taking a look at. Start with Port 0, parameter 35, "Motor Ctrl Mode", which decides what kind of motor is wired to the drive and how it might give feedback to the drive. Volts per Hertz would be open loop control, Flux Vector would be closed loop, is it an induction or permanent magnet motor, etc. If these are not set properly to match the actual motor, speed control problems are almost a certainty. Again, not likely here for your symptoms, but worth looking at if you're not finding the problem elsewhere.  Hope this helps. 
  6. NX1p2 Webserver

    It was done yes, but unless you're an experienced web designer I don't recommend it.
  7. FX1S-10MR with FX1N-1DA-BD mA trouble

    Yes we changed the wiring and made sure M8114 was FALSE when using voltage ouput, and M8114 was TRUE when using current output. We have a PLC in an lab environment and we're simulating difrenent values by writing them to D0 / D2 depending on output mode and measuring the output with a FLUKE.
  8. This setting is for the GOT, The GOT will disconnect the VNC client after the last operation from the VNC client. Enabling an other user to connect.  
  9. when I use Modbus TCP IP in mitsubishi FX3U then I can only use M, MW, I, IW  
  10.   I'm a bit rusty with WinCC, but you should be able to just add the data register as a tag in WinCC and associate it with a numeric value in the HMI program
  11. Hi, Is there any way to write value from D registers into M memory address? I would like to read analog value of my AI and send them to WinCC Flexible, there foud a way to use Modbus TCP IP to send data, or COM, but in both ways I can only read M, MV, I or IW address in WinCC Flexible.   I did try with MOV function to copy D register data to M, but it is not working in GX Works2
  12. Hello guys, I am new to this forum and have some problems with my PowerFlex755 EENET frequency inverter. I want to do a point to point positioning task but my problem before I can have a look at the point to point positioning is, that the inverter is always running with 5Hz as soon as I give the start command. Even if I write 0.0 to the reference the output frequency is about 5 Hz. When I change my reference speed to 10.0Hz the output frequency is 12.X (see attached screenshots). . I thought that maybe a min frequency of 5Hz was set somehow, but I couldn't find a parameter and that wouldn't explain why I have 12.X Hz as the output frequency with a setpoint of 10Hz. And an other question, have someone experience with positining tasks with a PowerFlex755 and Point to Point positioning? I think in the first step it is not working because of the problem I described above, but maybe someone have a programming example or could tell me where I can find some information about how to use the Point to Point positioning?   Thank you for advice!  Matthis Josewski
  13. Hi VeeB, Thanks a lot for the response ! It was highly helpful. Please let me know of the disconnection shall be triggered from the HMI if we want to disconnect the VNC clients...?
  14. FX1S-10MR with FX1N-1DA-BD mA trouble

    Have you examined the load resistance downstream?  Is it within the specs for the output card?  If any receiving component is not isolated, have you checked for DC offset?
  15. Yesterday
  16. FX1S-10MR with FX1N-1DA-BD mA trouble

    It is almost impossible that 3 cards have malfunctioning current part of analog output. I presume that you changed the wiring for current mode comparing to voltage mode, and forced M8114 to zero?.  
  17. it looks like it can be set in the GT designer 3 software: GOT Setup, Advanced Setting  
  18. FX1S-10MR with FX1N-1DA-BD mA trouble

    Thanks for your reply both on this forum and plctalk! Sorry i didn't realise i got response on that forum. Today we tried the voltage output mode 0-10V instead of current output mode 4-20mA. We recieved the correct voltage in the 0-4000 range. Digital value 0 = 0volts and Digital value 4000 = 10v. However the current output mode still maxes at 6.42mA The program we tried with were the example programs given in the manual for FX1N-1DA-BD I have attached a picture of the programs. We have 3 different FX1N-1DA-BD expansion boards and the mA measurement is the same on all three.  
  19. NJ501-4300

    Hello everyone!   I’m working with the MC_SyncLinearConveyor function block in the NJ501-4300 series, and I find the manual a bit unclear. Has anyone else encountered this FB, and could you share any insights or tips on its usage?”
  20. Thanks. I'll play with that.   I also just found some of the Omron webinars on Youtube that I hadn't come across before, one of which covers networking, so I'll be reviewing that -  https://www.youtube.com/watch?v=YncUUghOeU4
  21. NX1p2 Webserver

    Do you have any update about this project?
  22. PLC CPU A1Scpu-S1 Remote I/O master card cards fitted Melsec I/O A1SJ51T64   Various remote I/O cards fitted for example: AJ55TB3-8D   Problem being experienced:   Parity error light flickering on master card On reading the manuals this indicates to bad signals from a remote I/O card or electrical noise problems in the data cable. No other error lights to indicate a particular remote card in question. Spurious signals to the main PLC come from various I/O cards, not any card in particular. The weird bit is if we cool the master card using compressed air the parity light extinguishes and we have no issues.   Things tried so far:   Changed the master card but same issue. Data cable from PLC to remote station (but not the daisy chains between the remote cards) If the daisy chain was at fault We’d expect to see error lights on the Mastercard at the point of daisy chain failure. Checked the voltages of data and incoming supply - both stable and correct. There are 2 mastercards in total on one rack and another on an additional rack. One card has given issues for years but now a second card is doing the same on the same rack.   Other things to possibly try:   Change all the remote I/O cards associated with one Mastercard initially but not sure if we have enough of this old gear in stock to do so. Change the daisy chains Change the main plc backboard. Manual attached. Any help or similar experienced would be greatly appreciated. manual_IB(NA)-66574 (2).pdf
  23. FX1S-10MR with FX1N-1DA-BD mA trouble

    I already wrote you reply on PLCTalk (https://www.plctalk.net/threads/problem-with-analog-output-fx1n-1da-bd.139641/). Most likely there it is not up to PLC or PLC card. It can be either bug in program or problem with sensors. Why don't you post program so we can analyze it?
  24. Hi We're having issues with an FX1N-1DA-BD Analog output module. We're using an metallic contamination sensor MCS 1000 to detect particles. This sends pulses for particles detected in a 30 second time window to a Mitsibushi PLC FX1S-10MR-ES/UL which in turn gets converted from a digital value 0-2000 pulses -> analog value 4-20mA and sends the data to our DCS. The range is adjusted so that 4mA represents 0 particles, and 20mA should represent 2000 particles. The problem is that the analog output module never sends an current over 6.42mA. It starts with 4.0mA then maxes out at 6.42mA long before the max range of 2000. We can't find a problem in the program and have also tried the example programs in the manual, but still only get a current of 6.42mA We have also tried 3 different FX1N-1-DA-BD and still get the same results. Manual FX1N-1DA-BD Hoping that someone here might have some experience with these modules Thanks!  
  25. Hi, I would like to automatically close the VNC viewer connection, which is used to view the GOT2000 HMI remotely. Very interested to know if any options are available. Thanks in advance !!!
  26. Last week
  27. Communication between NX PLCs

    EtherNet/IP Tag sets.  Set them up on each PLC, one to transmit, two to receive.  Ideally, create structure types with the content to transfer.  (This is similar to Rockwell's producer/consumer tags, and uses the same class 1 I/O buffer technology.)
  28. So I have (1) NX102 and (2) NX1P2's on conveyor units which support an Omron AMR.  Communications between the PLCs and the robot are handled using Omron's standard ARCL function blocks. I'd like to have some communication between the PLCs - mostly checking sensors & status variables, possibly triggering minor actions. Poking around the manuals and some of the Youtube videos for communications, but looks like there's lots of options, and am looking for a simple way to pass basic info between the PLC's, all of which are on the same VLAN on our network (all have IP addresses of 172.16.209.xxx). Any suggestions on where to start?  
  29. FX5U fixed buffer Modbus TCP

    Why ??? you can do this easlly with the simple PLC comm settings. Ypu don't need any programming   OR if the FX5 is just the server just create a modbus port in the port settings and you're done
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