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  1. Hello everyone, I'm writing a block in GX Works3 to perform the "Home" operation of a servo motor. (The algorithm inside the block has been tested and is working.) However, in projects with many servo motors, I want to use the block. The axis number will be requested from input the block, and the value received needs to be indexed into the places labeled as "Axis" within the block. And I need values like (4*(AxisNo))+2 inside some structure labels. The function block I want to create will look like the attached file. Which methods should I use to achieve this, and how can I do it? I tried using arrays but couldn't succeed.   Example; If I enter a value of 2 for the Axis, the labels below will look like this: FX5SSC_1.stnAxCtrl2_D[Axis].uPositioningStart_D.0                               ====> FX5SSC_1.stnAxCtrl2_D[2].uPositioningStart_D.0          FX5SSC_1.stSysCtrl_D.uExternalInputOperationDevice1_D.(4*Axis+2)   ====> FX5SSC_1.stSysCtrl_D.uExternalInputOperationDevice1_D.10    
  2. Hi everyone! I have annoying problem with one of the servo motors on a machine. I am using NX1P2 PLC with 8 servo motors 1S. Two of them are Gered with MC_GearIn. One of the servo is the master the other one is the slave. Once in a blue moon the master one fire an error (Fault Code: 0x64580000  Fault Description: "Motor position deviation exceeds allowable range"). And the error appear when the motors are not moving (changeover or maintenance). I couldn't replicate the error on my testing machine so i do not know what cause the alarm. The only way to reset this error is to Home the two motors with MC_Home. I have to mention: this is happening only when the motors are configured in LinearMode never happened in RotaryMode. Any help will be appreciated.
  3. Hi! I have a argument with one of my college...he sad it is possible to connect 2 servo motors (1S) with 2 servo drives but only one drive is connected to the PLC (NX1P2). One of the motors will be master and the second one will just follow the first one. He claimed he saw  this already once, and the master motor follows the slave one - just wiring the drives in certain way...I don't know how to do this. I'm almost sure it is impossible, but.... We need this, because we have PLC witch support 8 axes but we have 9 motors(changing the PLC is not an option). So is it possible to control 9 motors with 8 axes, and one of the servo drives is not even connected to the EtherCAT network? Any help will be appreciated.
  4. Hi! I have a question...Is it possible to keep the current EtherCat configuration but the last two drives will be optional. In other words - can i somehow Enable/Disable when i use them by the PLC program? Right now i have to keep two version of the same program-one with the drives physically installed on the machine, and one without them on the machine. Thank You in advance.
  5. I'm using a Mitsubishi FX5UC PLC to control some Minas A6S servo drivers. Previously I've always used a pulse train and discrete IO (it's the way things have always been done here). This time I'd like to use Modbus RTU over RS-485. I'm pretty confident that the RS-485 wiring is correct because I'm getting an exception code back from the driver rather than the messages from the PLC timing out.   I've been reading the manual called Operating Instructions (Overall) for the MINAS A6 series, particularly the communications supplement. I may be misunderstanding this, but the Modbus implementation appears to be non-standard. Specifically, in Schneider-standard Modbus, after the slave ID (or in this case, axis ID), the next part of the message is a function code that specifies the type of command; 01h is to read a coil, 05h is to write to a coil, and so forth. Whereas the Panasonic manual describes a different list of commands - to read the driver serial number it would be command 0, mode A, which gets transmitted as A0h. Documentation screenshots are attached.   The PLC function ADPRW only works with standard Modbus commands. So what I'm wondering is, am I misunderstanding the communications supplement, or do I need some code specifically for these drivers? If the latter, I would assume that someone has already written a function block or a predefined protocol definition for this hardware. Does one of you fine people have one?   Thank you in advance for the help!
  6. Hi  I want to adjust servo motor but I cant .After finishing the tuning error C004 is displayed
  7. Does anyone know how to change the reading on Omron servo motor reading from negative to positive? The encoder is reading negative values when it is moving in the forward direction.  I am using 1S servo on NX1P2 controller on Sysmac studio software.  Please suggest. 
  8. Does any one know any instruction that rotate the 1S Servo Motor continuously with angle(0 to 360)  and velocity control ? https://forums.mrplc.com/index.php?/topic/35459-omron-g5-servo-drive-rotary-mode/#comment-165564   Above link may be quite close to what i want. But I have no idea how to set it up   Simon        

  9. MR-J2S- Servo Driver to PLC

    Glen7829 posted a topic in Mitsubishi

    I have a test station to test MR-J2S Servo drivers,  I am looking for something unique in the drivers to be able to save data about that test.  First thought was the SN, but i am not seeing any way to pull serial number from the driver. Only found it on the side of driver and really don't want people having to type it in , cause usually they type in the wrong numbers.  Does anyone know of a way to get the serial number out of the driver? or at least where it could be found?  Or any other unique identifier in these drivers?  

  10. How can i limit MRJ4 servo load?

    CangkeMan posted a topic in Mitsubishi

    Hello, I am beginner at servo and its driver. i am using MRJ4A driver and HG SR102 servo motor. i want to make my servo stop or alarm when the load is over the maximum load that i set by my self. what parameter should i set to limiting servo load even if the servo motor strength enough to lift the load.?  

  11. Motion Control

    Kiwi_man82 posted a topic in Omron

    Hi Everyone.   I have been tasked with changing out an older Flex Drive servo drive to a more modern Micro Flex drive in a machine that has an Omron CQM1H-CPU51 PLC.  I'm having a few issues but hope that i can gain some clarity around at least one of the hurdles Im facing from here. Biggest issue for me at this moment is My work hasn't yet purchased a programming lead for this PLC (or even the bits required to make one myself) but i have a feeling the control for the Servo is done via motion control in the PLC.  Question here is, if changing from one servo drive to another type, will the motion control code need to be updated to work with the new servo drive?  I have very limited experience with motion control itself at this stage so I'm a bit lost when it comes to these sort of details. Regards Kiwi_man82

  12. QD77GF Error D304

    CangkeMan posted a topic in Mitsubishi

    Hi. I am using PLC Q06UDV wit QD77GF to operate 11 servos, it is my first time using QD77GF and CC-Link IE Field. I've done the parameter setting. but the qd77gf error lamp started to blinking. i try to check it in cc link ie field diagnostic and didn't find anything except the error lamp blinking in monitor view. then i checked system diagnostic , no error showing up but, only historical error when i started the power of plc. it show D304 error.  in manual book the solution are lengthen the operation cycle qd77gf, check the cable, and shorten plc scan time. where can i find this setting sir?  
  13. Hello all,    I have 3 kinetix 5500 drives connected in series but some how the 3rd drive lost power. all the fuses in the cabinet look good. nothing else is tripped either.    any advice is appreciated.  thank you   
  14. Hi everyone,  I am new to Mitsubishi PLC. I am trying to see from where Run or speed commands goes to Servo. I have MELSEC FX2M-32MT with FX2N-1PG cards for the Servo and I am using GX Developer 8.91v  Also, I would like to mention that initially I found out that BATT V light was lit so here what I didi. >I replaced the battery within 20 second while powered ON. Before changing the battery I took upload of the program successfully.  >I have cleared PLC memory and re downloaded the program.  > Checked Memory addresses M8005 8006 both are Low.  Now, when I am trying to run  my machine it is not giving output to two Servos while a conveyor operates when started from the HMI so it means program is inside PLC, right ? Program is attached if someone wants to have a look.  labeling mc 300322.rar

  15. Omron 1S Servo

    simonongsk posted a topic in NJ Series / Sysmac Studio

    Hello:           Does anyone know the details explanation of the Homing Settings for the Axis? Set the homing operation. 0: Proximity reverse turn/home proximity input OFF 1: Proximity reverse turn/home proximity input ON 4: Home proximity input OFF 5: Home proximity input ON 8: Limit input OFF 9: Proximity reverse turn/home input mask distance 11: Limit inputs only 12: Proximity reverse turn/holding time 13: No home proximity input/holding home input   Limit Input referring to Input (I/O) ? How about Proximity Input ? It is confusing with the terms. The manual has no explanation for each of the above selection.   Any one?   Simon
  16. Hi, I need help with my program. How do I include the fractional part of the position I set for encoder? I have an Omron PLC and using cx programmer.  I need to command my servo (from HMI number input) to move to a certain position. Now using a manual computation, my servo is supposed to move 95.65mm, however, using my plc program, the resulting position doesn't include the 0.65. I used the FIXL instruction to convert my result from float to 32 bit and it removed the fractional part of the value.   Thank you!
  17. Hi, I have to implement an axis control in a NX1P2 PLC using an inverter (3G3MX2) and an encoder cabled on a EC0122 board. I found something similar implemented  on a CJ2M PLC, but I have no idea how to set up the axis in the configuration of sysmac studio and how to implement the control. Can someone help me? Some sample to catch out the configuration?   Thanks a lot Andrea
  18. Hey y'all- I have an application that uses an Allen Bradley servo with a brake and a linear actuator to lift a plate vertically. While maintaining a position, the servo drive (Kinetix 5500) will occasionally fault due to over-torque.  I'm thinking it could possibly be due to mechanical issues i.e. bearings in the actuator but my initial thought would be that it would fault while moving up/down as well, so far I've only ever seen it fault while holding a position. This leads me to suspect that there may be something off in the control loop. I'm not involved in the setup but I know we use load observer and I reckon we use auto-tune. Other than that, I wonder if it's something to do with the brake. I also read about mechanical resonance in the manual which seems like a stretch but it could be contributing, the frame that the actuator/motor is attached to does vibrate a fair bit.  I'm familiar enough with basic motion control using Allen-Bradley and understand the basic concepts behind the servo/control loop. However I'm at a loss for why the servo/drive would spontaneously over-torque while maintaining a position.  How would you guys approach troubleshooting this further/solving this issue?  Many thanks!

  19. Problem during tuning

    Gman1 posted a topic in Mitsubishi

    Hi! I would like to do some tuning on our machine, but the problem is that the machine stops and drops origin positions. I selected User Command method with Basic setting. After 5sec I started the tuning, the machine stops with the roblem of that axis. Is there a parameter bit that goes high (or low) during tuning? There're no strange sounds nor movements..even the amplifier doesn't give error code. Is there something else that i should check? In the Servo-Adjustments parameters, One Touch Tuning setting I found the Permissible Overshoot Amount Level is set to 0.  Can it be the problem? 
  20. Hi there I was reading this thread: And trying to create 3 axes. 1 virtual axis and 2 real axis, I would like to use MC_GearIn for each real axes so both real ones follow  the virtual axis (so both can move in sync motion). But my question is: If I give Move cmd(Absolute or relative)to master virtual axis and since it's virtual, it is not going to move then how can the other real ones follow the master(assuming that it's literally electronic gearing).  Any help will be appreciated!
  21. Anyone know what could be missing to be able to import this stepper motor to sysmac? This is one of the supplied xml files for the stepper motor.     FASTECH_Ezi-SERVO2_EtherCAT - OMRON.xml
  22. Hi there This attached pic I got from Omron motion control manual. I am trying to wrap my head around it. Does it mean that the slave servo axis is gonna follow master encoder axis using GearIn FB?? If so, then Can we executive Move FB on encoder axis? Looking forward to your responses.  

  23. Axis Permanent Control

    Levent1970 posted a topic in Mitsubishi

    Hi Guys, How can I bring an axis into permanent control? that as soon as a value changes, the axis reacts. My Hardware FX5U, FX5SSC MR-JE-20B. Thanks a lot.

  24. Servo tuning

    Gman1 posted a topic in Mitsubishi

    Hi.  I am planning to do a full scale servo tuning on our producting machine. Is it possible to do it while the servos are in, assambled? I mean no production, no disassembling, servos stay where they are, just tuning them one by one with their empty load..
  25. HELLO EVERYONE THERE IS THIS PROJECT WHERE I CHANGED THE OLD SERVO SETUP WITH NEW SERVO DRIVE MRJ4200A-RJ SERIES. OLD SERVO HAS A REVOLUTION OF 15 BITS BUT NEW SERVO HAS 22 BITS RESOLUTION. PROGRAMMING IS SAME BUT MY DISTANCE CALCULATION IS DIFFERENT NOW AND MACHINE DOES NOT GIVE CORRECT DISTANCE. PLEASE HELP ME