[Jazz JZ20-J-T40 - 2 problems (A/D and timers)]

In my Jazz application i use another idea to run time mesuring.

I use MI for set time (in sec or 0.1sec)  and copy it to another decremented MI. Then SB with 1s or 0.1s  blink used for dencrement this MI.

If decremented time MI  <= 0 - do something. At start of next cycle simple copy set MI to decremented MI.

Then my STATE MACHINE worked with timed cycle and do not use timers.   

[Encoder A, B counter works fine, how to process 120 degree Z pulse?]

Thanks John_R, my prog it is something like your sample.

Then i see great idea with MI55 to MI56 copy for save frequency.

If counter MI0 is reseted - frequency information reseted also. So you idea with buffered frequency is useful.

 

 

[Encoder A, B counter works fine, how to process 120 degree Z pulse?]

On 5/22/2021 at 11:07 PM, Joe Tauser said:

HSC as shown above is definitely workable

Report - use HSC (#3) for count Z pulse works fine in this application. Tested for long time (approx 8 hour) - machine not stopped and all parts is OK. 

[Strange problem with same project in different Unistreams]

Due to the fact that you have replaced the full version B10 of the controller with a simplified basic version B5, the functionality you have programmed probably does not meet the capabilities of a simpler PLC controller.

That is, if you wrote a program from scratch for a simpler controller - probably the Unilogic environment would tell you that some of used functions are not supported.

By making a simple replacement, you have avoided the messages of the Unilogic environment, but probably both used controllers are not equal in capabilities.

Some option in Unistream built-in manual is marked with "For UniStream 7″ Pro only".

[Encoder A, B counter works fine, how to process 120 degree Z pulse?]

This is realy old SIKO IG 11 series abx-1000-3-pp

It is also strange for me 1000x4=4000 increments. 

But it is present on Jagenberg macnine cirquit diagram = 1000ppr.

Main goal - start-stop overtaking hooks on Startposition - 150 pulse after Z pulse (120degree) and 1_Stopposition - 1200-1300 pulse after Zpulse.

Than if Z pulse losted - machine do not stop in Start position.

Than 1 ppr error is not problem. Main problem -  do not lost every Z pulse.

[Encoder A, B counter works fine, how to process 120 degree Z pulse?]

12 minutes ago, Ausman said:

fit a "made to measure" lobe to the shaft

Thanks Aus.

I think about it,  but  shaft is used for drive floating overtaking hooks. It can be installed in different position on all shaft length.

The main problem is the customer - he needs more speed without any additional modifications of the machine .   

 

[Encoder A, B counter works fine, how to process 120 degree Z pulse?]

Now i found one more solution that can be tested.

I can connect only A signal of my encoder - Pin I2 and use reset pin I3 for evaluate Z as reset signal for HSC.

Problem with 4 times lower accuracy but maybe stable with reset counter after 120 degree.

But in PLC pdf i can't find minimal reset pulse duration parameter.

 

 

 

[Encoder A, B counter works fine, how to process 120 degree Z pulse?]

Thanks Joe, i have on shelf one of

1 hour ago, Joe Tauser said:

24V pulse stretcher

I was already thinking about testing this device.

However, in the process of analyzing the already assembled circuit, I came to the conclusion

that I can rearrange the input signals and try to use the third counter, which is on board the applied PLC.

Then now i have two possible solution and can test it on machine.

I wonder if there are any other options?

[Encoder A, B counter works fine, how to process 120 degree Z pulse?]

Hi,

In my last application I use V130-33-TR20 PLC.

Applying an interrupt  (1.25ms), I was able to get a system that controls the clutches to drive the mechanism.

As always happens in the process of modernization of the old production machine - it had to work at low speeds provided by the manufacturer, but as a result, customers wanted to triple this speed.

Accordingly, the applied control algorithm began to give unpredictable failures at increased speed.

After analyzing the problem, I realized that the encoder used in the machine has three additional Z pulses per revolution.

Z pulse has a length equal to one pulse of the encoder (1000ppr used).

Accordingly, the interrupt method (Immediate read input) used to interrogate this
Z pulse sometimes does not "see" a too narrow pulse at increased speed.

My idea is to use another HSC (MI1) channel for find Z pulse (count it) in interrupt routine.

So my question is:

What other tricks can be used to ensure the recording of a short  Z encoder pulse?

 

P.S. The accuracy of the definition does not play a decisive role. (+-50  main encoder pulse possible).

However, skipping the definition of this pulse leads to damage to one part produced by the machine. 

[Error 207]

Hi,

maybe some next step help to find solution:

1) Try to use separate USB to COM converter and PORT1 of  V570 to run connection (V570 com port CS cable needed). This is for Visilogic installation check. Result?

2) Try to use short USB cable for V570 connection ( For test power +5V from Laptop to V570). Result?

3) (the same test as #2) Try to use USB hub with external power for connect USB V570  to Laptop. 

4) Try to change COM port # used by V570 USB-com driver in system and try to use com port # do not used by another drivers.

5) Last steps on video from DELL (2021)

https://www.youtube.com/watch?v=xRnferpaMBU

 

P.S. Maybe it was only Win10  issue (update, antivirus, UAC, ect.)

P.P.S.   Try to go to V570 info mode and check  is it any information sended  to V570 when Visilogic try to connect.  You can check it on working and not working Laptops. 

[Error 207]

12 minutes ago, Joe Tauser said:

So the computers are OK.

On one of PC used with Visilogic i must to delete COM port and restart PC with PLC connected.

After automatic reinstall port - communication is OK.

Something in PC use COM port in "hidden" mode.... !?! 

[NEW Visilogic Version to what O/S list]

Thanks, Aus.

In table do not present my favorit 9.8.65, no changes from 64, or changes is only in Visilogic?

[Remote CPU mounting options]

It is not possible. High speed CPU to panel connection and power must be as short as possible.

Maybe best solution - use Unitronics panel (VNC) and Unisteam PLC without HMI  (Virtual HMI).  

https://www.unitronicsplc.com/unistream-series-plc/#1449515769763-3521ed84-35551451602511853

[Expansion error 400]

Quastions;

1 What expansion module used EX-A1X or EX-A2X?  EX-A2X is isolated and more stable.

2 How much W is power supply capacity? If it low - install NEW another one with more A on 24VDC outputs

3 Is it possible that on output present relay or valve coils without diode clamp?  If Yes - install diode clsmp to all coils

4 Is it some VFD installed near PLC - if Yes - please connect -24V power supply wire to machine GROUND (EARTH).

5 Is it possible that on some output present short circuit? And some times PLC  activate this output and restart PLC with error?

 

[change MF format in HMI]

Please see this topic

But if you need enter something to displayed MF (ML on display)  - maybe some add input display needed.

You can also use ML to MF conversion for this input display.  And as result correct short display on main screen.

[Temperature sensor]

6 hours ago, Patko said:

I can also use these PT100, 2 wire sensors?

Yes.

This is original connecton for 3 different  types of sensor

I try to use "Paint" for show only 2 wire PT100 on all inputs

 

 

[Ongoing.......Puzzle this and maybe learn something.]

1 hour ago, Isakovic said:

used in compressor control to sort working hours

Great solution, and an even more exciting application !

"The Art of Computer Programming" (Donald Knuth).

"The Art of PLC (Ladder) Programming" (Isakovic) 

[Ongoing.......Puzzle this and maybe learn something.]

Hi, i try to decode Isakovich Enigma code

Then answer for Number 3:

Code do sorting numbers placed in  MI13, MI14, MI15, M16, MI17 .......  (If we change first Block in row 5 from > to < code change sorting direction).

If we change numbers in first row - we change MI used for sorting in this code.

Something like C++ for Visilogic....

[Temperature sensor]

You can also find sensor with 4-20mA or 0-10V output,

or use PT100 to 4-20mA separate converter.  

[How can I convert DI/DO read as 16-bit words to coil status with Modbus 485?]

5 hours ago, PeterFukt said:

But it can only read coils in range 0-9999.

As i see in siemens pdf - coil address is W#16  register - then it can be from 0000 to FFFF in hex.

Maybe issue is with correct numbering in modbus - 0 in unitronics +1 in standard modbus?

Please check this.

[Ongoing.......Puzzle this and maybe learn something.]

Ausman's answer is very close to the solution.

Therefore, we consider Number 2 solved.

After all, thanks to his tips, I found a way to solve this 

 

Sometimes, even in simple task with the encoder, you need to show on the screen that the movement is right - left, or up - down.

It is also important to know when the object stopped.

 

[Ongoing.......Puzzle this and maybe learn something.]

Number 2....

 

 

 

[Ongoing.......Puzzle this and maybe learn something.]

Answer ON-OFF-ON-OFF day by day...

1010101010101010101010101010101

Maybe it used for control flowers watering?

Or for make correct rise and fall signal at 00.00 everyday. But what with 30 to 1 or 31 to 1 update...

[Today's lighthearted relief...add yours as necessary.]

18 minutes ago, Ausman said:

audiophile with the most expensive valve amps and super duper turntable sitting back with their $10K headphones on

You are right, Aus!

....one of this audiophile (with self made and expensive valve amps and expensive headphones and speakers)  - my friend posted photo of this vinyl from collection on local forum. 

Maybe now this vinyl record is already a very expensive antique!

[Today's lighthearted relief...add yours as necessary.]

rare vinyl sound :)