MELDAS 500 FCA520A-MR ??

[parametric.ms]

Does anyone familiar with that controller? (MELDAS 500 FCA520A-MR)

I just bought used machine in good condition (OKK RRM-3V) but I have several problem

1. Display in japaneese (Can I switch to english?)
2. I can't find the RS232 port (How to connect my PC?)

Any help would be appreciated

Thanks
Andre

[chippy1]

Go to diagnostics and press the menu key PLC I/F or the one that has I/F and some Japanese characters. You should see a bunch of 1's and 0's on this page. The cursor will be blinking at the bottom. Type 1001 and move you cursor over near mode and type M. Press input. Now go to parameters where you will be in machine parameters. The menu key at the bottom should say Base. Page forward until you see a parameter lang and type a 1 and input. Power off and on. Should be about the 4th page in under base if you have a 9 inch screen.

RS232 port is located on the QX521 card or if color screen the QC524 card. There should be a cable on there that breaks out to a RS232 port. On OKK's it's usually located on the side of the operation panel under a small cover. If no cable then you will have to manufacture one. Look on meau.com downloads and find the manul for M500 connection. It will show you what you need for that cable.

Good Luck

Chippy

[CNC Viking]

parametric.ms,

I use the following RS232 cable with my 1996 Meldas 520 AMR.

It works with either Hardware or Software handshake settings. My CNC, DNC and PC-settings are for Hardware handshake.

Serial cable pinout (built from 20' Belden 8104 shielded low capacitance RS232 cable):

PC side 9-pin Dsub female <---> CNC side 25 pin Dsub male

2 RxD <---> 2 TxD
3 TxD <---> 3 RxD
5 Signal Ground <---> 7 Signal Ground
7 RTS <---> 5 CTS
8 CTS <---> 4 RTS

Pins 4 DTR & 6 DSR are jumpered at 9-pin Dsub female end.

Pins 6 DSR & 20 DTR are jumpered at 25-pin Dsub male end.
Pin 8 is not used at my CNC side's 25-pin Dsub male end, but may need be jumpered to 6 & 20 for your CNC. Please check this. Try without jumpering pin 8 to start with. If it works, then fine. I don't think there is a wire behind pin 8 in your CNC's 25-pin D-sub socket.

The cable shield is not connected in any end!

All my settings for CNC, DNC program and PC can be found in this other thread on the "Zone".

http://www.cnczone.com/forums/showth...005#post570005


/ Peter

[parametric.ms]

Go to diagnostics and press the menu key PLC I/F or the one that has I/F and some Japanese characters. You should see a bunch of 1's and 0's on this page. The cursor will be blinking at the bottom. Type 1001 and move you cursor over near mode and type M. Press input. Now go to parameters where you will be in machine parameters. The menu key at the bottom should say Base. Page forward until you see a parameter lang and type a 1 and input. Power off and on. Should be about the 4th page in under base if you have a 9 inch screen.

RS232 port is located on the QX521 card or if color screen the QC524 card. There should be a cable on there that breaks out to a RS232 port. On OKK's it's usually located on the side of the operation panel under a small cover. If no cable then you will have to manufacture one. Look on meau.com downloads and find the manul for M500 connection. It will show you what you need for that cable.

Good Luck

Chippy

Hi, Chippy
I bet you're an expert for mitsu dude I just want to make sure which button should I press to find I/F? (see my attach?)
If There is RS232 port on my controller, it means I can use 3D interpolation, right?

I'll try it tomorrow, its over late at night here
Talk to you soon if any progress

Thanks for all info

Regards,
Andre

[parametric.ms]

Thanks pete for cable info you're the best

[chippy1]

Okay, look at the QX522 card which is the middle PCB in your CNC cabinet. The connector name for RS232 is CSA21. SHould be the bottom connector on that PCB.

To chnage the parameter you need to go to Diagnostics. Press the third or fourth key at the top right hand side of your key board. Then press key 4 below the CRT. That should be the I/F page. Then type 1001 and move cursor to the third set of parenthesis and type in M. Press enter and then press the second key at the top right hand side. This should get you to the paremeters. Follow what I said in my first thread and look for the parameter lang. Type in a 1 and enter. Power off and on. Judging by the language on your keyboard, you may not be able to change the language to English.

Regards,

Chippy

[CNC Viking]

chippy1,

Don't forget to mention that the cable on your drawing is the intermediate cable between the CNC control cabinet and the operation panel. This cable should be there alraedy and the right side connector on the drawing is the 25 pin D-sub RS232 receptacle at the operation panel, also known as RS232C, CH1. Between this recaptacle and your PC you can use an RS232 cable as I described in post #3.

parametric.ms,
If you do not have this intermediate cable installed, let us know and I can post the configuration of a direct cable between the QX522 card and your PC.

Warning, if you install an "alien" 15 pin D-sub connector to the CSA21 port on the QX522 card make sure that the securing screws are M2,6 and not the more common, course and larger, screws normaly found on D-sub connectors. You can damage the CSA21 port threads if you are not careful. As "plan B", you could replace the threaded posts at CSA21 to a hybrid custom version with M2,6 male threads and the thicker type female threads. When replacing them do it carefully, do not overtighten and do one post at a time. Also make sure that you are not charged with static electricity. PCB's are very expensive.

By the way, I think that the 25 pin D-sub RS232 receptacle at the operation panel, also has M2,6 threads, so be careful.

Re. the language:
I have a Meldas 520 AMR too and it works perfect with english language parameter.


/Peter

[CNC Viking]

I'll try it tomorrow, its over late at night here
Talk to you soon if any progress

Thanks for all info
Regards,
Andre

Andre,

Any progress yet? We all want to know how you solved your problem(s). Feedback is important so we all get confirmation of what works and what does not work.

/Peter

[parametric.ms]

Sorry All for late reply my progress,

@chippy, after I turn on control, I make a zero return position. For Z working good. Y axis move to wrong direction, X axis move to right direction, but can't stop at 0. (X,Y axis can't return to zero position)
my screen look freeze. I can't jump to any menu at top keypad. I just can go to last menu at right hand side. I choose no.7 then INPUT, I see I/F menu at third button under my screen. when I push that button I see my I/O but I can't input "M" at next parenthesis. My "M" character is under "/" key. (I already try with hold shift key but no luck)
1. Can I use this menu?
2. How to input "M" at parenthesis?
3. I see Z70 alarm, what is it mean? Is it related with Zero Return process?


Thanks,
Andre

@Peter, Sorry I just came back from out of town

[CNC Viking]

parametric.ms,
See if I can help.

You want to come to Machine Parameters? It is a little tricky the first time.
You do like this:

1. Press DIAGN IN/OUT button.
2. Press Menu key under the screen until you can see the option PLC I/F.
3. Press PLC I/F key under the screen.
4. Make settings: DEVICE (1001) DATA ( ) MODE ( M ).
5. Press green INPUT CALC button. You will see no change, but leave it at that.
6. Press TOOL PARAM button.This brings you to the MACHINE PARAMETERS menu which is now open.
7. Press MENU until the ZP-RTN option is visible.
8. Press ZP-RTN key under the screen.

9. Check or edit what is wrong here. By the Way, did you solve the language thing? Maybe you also find the language settings here.

When you are done, you must go back from "M" mode to "U" mode:

10. Press DIAGN IN/OUT button.
11. Press Menu key under the screen until you can see the option PLC I/F.
12. Press PLC I/F key under the screen.
13. Make settings: DEVICE (1001) DATA ( ) MODE ( U )
14. Press green INPUT CALC button. You will see no change, but leave it at that. This brings you back to normal "USER PARAMETER" status.

/Peter

[chippy1]

HI,

It looks like the methods by which you get their has been defined by CNC Viking very well.

Before you do the process that gets you to the parameters note the whole alarm on the diagnostic screen. Z70 is only part of the alarm.

I imagine this pertains to absolute position has been lost. That would mean that you may need a battery for the drives. This is usually located on the termination of the last drive. Usually the the spindle. There will be a little white or manila box that hold the batteries. However, usually you would loose the position on all drives not just X & Y.

Let us know the actuall alarm and we will try to go from there.

Regards,

Chippy

[parametric.ms]

thanks for your fast attention

the major problem is my screen is freeze, I can't jump to anymenu

after I turn on NC, all menus are disable, except the F0 (The last menu on top right hand side). I see 1 to 7 item on screen. Can you tell me what is it in english?? cos after I choose no.7 then INPUT, I see menu on below CRT
3rd I/F with japaneese, 4th NC in japaneese