Mitsubishi q02H cpu communication problem

rohit_plc · Dec 30, 2013

Hello all....

i have a q02h cpu by melsec iam trying to communicate with usb port but am not able to ......when i go with read from plc and click on connection test its shows "connection successful with q02h" but when i click on "ok" button its shows connection problem please check power module, cpu module etc......iam using gx developer 8.95z ......plz help.....

iant · Jan 1, 2014

Are you using a USB to rs232 converter and what version of windows are you using.
Also have you been online to this plc before

iant · Jan 1, 2014

I have had a similar problem with a cheap converter.
I now use a KEYSPAN

rohit_plc · Jan 2, 2014

iam not using any converter iam trying to communicate with q20h cpu onboard usb (standard B plug) with my laptop....iam using windows xp sp3...

Akahige · Jan 3, 2014

The Q02H has five dip switches inside the cover door for memory access. SW2 and SW3 in particular. It might be possible that these switches are switched for the wrong memory location. Look at item 13 on page 99 (pdf page 119) on the attached manual link.

http://www.meau.com/Files/IB_NA_0800061-X.PDF?ID=010000000000000001000000246605000

rohit_plc · Jan 4, 2014

link not found ...plz re post...

Chris Taylor · Jan 5, 2014

Have you installed the USB driver for the Q series?

Akahige · Jan 6, 2014

Sorry. They must refresh their search engine. Go to the Mitsubishi website www.meau.com and and in the top right hand corner is their search engine, search for the Q02 hardware manual IB(NA)0800061-X.PDF

Akahige · Jan 6, 2014

powerplan said:
Have you installed the USB driver for the Q series?

I would assume that if he already got an "connection successful with q02h" the driver is installed properly. But some computers need the drivers installed for each individual USB port.

But if not that driver can be found in the computer's C:\Program Files (x86)\MELSOFT\Easysocket\USBDrivers folder. Run it in the Device Manager.

Chris Taylor · Jan 6, 2014

I do recall, once with a new laptop I did get connected without the USB Driver, it would complete a connection test but nothing more.

Akahige · Jan 6, 2014

Good point Powerplan. Rohit, are you connecting via straight USB (PC) to USB-B (PLC) or are you using a USB to serial adapter (PC) then connecting serially to the Q02 through its 9-pin round serial plug (PLC)?

Akahige · Jan 6, 2014

Sorry...I see you answered this question already. Can you connect via serial port?

One last thing Rohit, if you clicked the 'connection test' button and got the connection with Q02H successful popup by clicking the 'OK' button should just close the transfer setup window. The notification you are getting is a common notification when a connection is not established. You are pressing the OK button and not the 'X' button on the top right, correct. Clicking on the 'X' will reset the transfer setup settings to default. (I am sure you know this but this problem is perplexing, we should cover all options)

rohit_plc · Jan 12, 2014

Akahige said:
Sorry...I see you answered this question already. Can you connect via serial port?

One last thing Rohit, if you clicked the 'connection test' button and got the connection with Q02H successful popup by clicking the 'OK' button should just close the transfer setup window. The notification you are getting is a common notification when a connection is not established. You are pressing the OK button and not the 'X' button on the top right, correct. Clicking on the 'X' will reset the transfer setup settings to default. (I am sure you know this but this problem is perplexing, we should cover all options)

iam using straight USB (PC) to USB-B (PLC)and got successful connected popup and after by clicking "ok" button got this "connection problem please check power module, cpu modul"
it was on my one site now am not able to test this again because client is not interested to call me back because of communication problem...

iant · Jan 12, 2014

I suggest you offer to look at this "in your own time" for free. To solve your issue or let the client know if they have a future problem.

roby_nishikawa · Dec 26, 2014

Yes me too have the same problem, and this some picture that i found

Please help this problem, i'm still find for the solution.
Thankyou
Regard

Roby

Mitsubishi q02H cpu communication problem

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