glavanov

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About glavanov

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  1. Servo MR-J4 and QD75-MH4

    when the unit system is mm (microns) 100.0 microns is written as 1000 (32bit integer) int the buffer memory. All positioning data saved in the flash memory of the motion controller can be manipulated in the buffer memory and you can change it with sequence program from the main CPU. If i'm not wrong, the only condition is to change the data(positioning address) right before positioning start signal activation. In another words, this can work for you, if the variable stop points are defined before start of positioning. If you need to change the positioning address during movement, there should be FB for target value change. Does the liner movement stops during cutting process or it's a kind of flying shear? How and when are defined the cutting points?
  2. Servo MR-J4 and QD75-MH4

    Just use  [D<= Kn Dn] and interlock the instruction till next time you need it... STL is one of the good ways. Tested it my self and works like charm. Can still get one scan delay. You can use poin table in continuous path control and output M codes or just monitor the positioning data number being executed and compare the value to start external function. But still it depends on the type of application and axis control method.
  3. Using two PWM function

    Check m8340 busy/ready flag. If it's still on for some reason you can't execute another pulse output instruction for y0 There's no limit of PWM instructions as long as you do not execute more than one at a time for the same pulse output. If you use indirect variable inputs with data registers for both PW and interval, u need only one instruction and just change variables... When there's no PWM execution, you can use y0 as regular output What type of actuators do you control? Maybe positioning instructions like PLSV and DRVI are more suitable for your application?!
  4. Set Current Value to Zero

    So, is the HPR working? Witch method do you use? What is the HPR complete flag status in monitor data 31? Any errors or warnings in axis monitor? What do you mean... when you drive the motor the current value stay's 0? How do you drive the Axis... Jog, positioning or speed control? If Pr.21 is default set, the current feed value in not updated in speed control If Pr.55 is default set, positioning control is not allowed if HPR is incomplete. Jog, speed control, synchronous control and CAM function can be executed.
  5. Set Current Value to Zero

    That's how it look's in ladder logic. Pay attention to logic input selection depending on sensor/switch you are using. NO or NC You can invert the signal in the program or set Pr.22 in motion module axis parameters. And set your homing method!    
  6. FX3U simple positioning

    How about FX3U-2HSY-ADP http://dl.mitsubishielectric.com/dl/fa/document/manual/plc_fx/jy997d16401(e)/jy997d16401(e)e.pdf If you don't need more complex instructions... scaling for example, you can buy cheap Fx3G. Advantage is the built in USB port. Or Fx3GE with ehternet port. Both works great for simple positioning tasks. Yo don't need encoder! Pay atention what type of output you need... sync or source.
  7. mitsubishi software

    Don't bother.. he just dropped the gun and ran away!
  8. Way to change servo amp parameters using fx3u

    To change parameters you can use the built in display and buttons. Refer  to section 6 and 5 from the manual  http://dl.mitsubishielectric.com/dl/fa/document/manual/servo/sh030038/sh030038l.pdf Else personal computer with MR Configurator2 software and regular mini usb cable.
  9. mitsubishi software

    Sounds like brand new melsoft user...
  10. How do PLCs fade away?

    In our facility we have a lot of Mitsi PLCs, some with 15 years up time. No PLC fail so far. In my experience strange behavior is always caused by peripheral electrical equipment failure or poor programming. Exception was one Fx3U... one of the relay outputs was reached the cycle life limit. We change the relay and the unit is back on run. Once another 3U stuck in error state and the diagnotic tool cough it right away. Overload on PLS's 24V service power supply. Turns out to bi a smashed sensor cable. No program failure or loss... Mitsis are rock solid. We have had some S7 and AB failures, but never Mitsubishi. That includes VFDs and servos.  
  11. Encoder

    Hello to all, I have fx5-40ssc-s simple motion module with connected differential output type encoder for synchronous control. Now i need to add second simple motion module to control more servos. My question is, is it possible to connect the same encoder to second motion module in parallel since it's line driver output. Max current for encoder outputs is 20mA, -20mA I can't find any info for the internal resistance of motion module inputs, and since it's not a photocoupler inputs, i'm not sure is it gonna red out true value with multi meter if i measure the resistance between A and -A to determine the current consumption. My local support is not reachable at the moment, and i am afraid to try. The  fault will be on me... Anyone with that kind of experience?  
  12. enable a simulation

    Any time! 
  13. enable a simulation

    I had this problem before. In my case it was one of the first versions of GX Works3. No simulation for fx5 PLCs. I solved the problem by installing version 1.020 i think... evry of the versions above have the simulation for fx5. You can download the latest 1.038Q from the official site
  14. enable a simulation

    Wich version is GXW3 and what PLC are you programming?  
  15. High speed counter FX5U sample program

    If it,s a line driver then the output signal is 5V inverting between A and A' and to GND it's 2,5V Fx5 inputs requer 24V +-10%. It's normal to miss pulses and wierd it reads it at all. To read differential encoder you need high speed counter special adapter like FX3U-2HC and CNV adapter to mount it to FX5u but check hardware manual for details... It's cheaper to change encoder with 24V open collector outputs, but careful with PNP or NPN choice...