Communicating with 226 CN cpu via step7 microwin v4

[AmirB 1]

I have Chinese machine which has 226CN cpu I'm trying to communicate with it to upload the current program and maybe modify it.

But I can't communicate with it 

I'm using Chinese cable rs 232 to usb and windows xp.

When I use it I get "you must use rs232/usb PPI multi master" massage 

Is there a problem with the cable or the software?

I tried to change language of the software to Chinese ( as a solution I found on the internet)but it doesn't help

What should I do?

 

 

 

 

Edited 8 Feb 2021 by AmirB

[Rodney 21]

AmirB

To communicate with the Siemens series 200 PLC you must use a Siemens PPI Cable.

Rodney

[AmirB 1]

Thank you for replying

The cable I'm using suppose to be used with s7 - 200 series as written "usb2.0 to RS485 for S7-200PLC series"

[Crossbow 285]

If it's not a genuine Siemens cable, it could be the issue.  Make sure you have the drivers properly installed for it, as it's USB.  And make sure you set your software to use whatever COM port the cable shows up as in your computer's Device Manager.

[Rodney 21]

The device manager should also if there is a conflict 

Rodney

[AmirB 1]

The driver of the cable is usb serial CH340 "in device manager"

And it's been installed from a cd came with the cable

[Rodney 21]

Did you check in device manager what com port is assigned and if there is any conflict.

Rodney

[Crossbow 285]

When the driver installed, it MUST have created a COM port in Device Manager.  You need to look under Ports and see what port it is, and then set the software to use that port.

[AmirB 1]

Thanks

Mr Rodney & Mr Crossbow for replying

I checked the port and 

They both ( software & device manager) use the same port (in my case port 3 )

And now the error is " communications timeout.check the port number, network address,baud rate,and the attached cable"

when I select "search all baud rates"

But if I didn't I get the same error " you must use the (RS232/usb)"

Edited 10 Feb 2021 by AmirB