G120 connecting with PC via Profinet

Dear Experts,

I have several questions about Sinamics G120. I haveControl Unit CU250S – 2 PN 6SL 3246 0BA22 1FA0, firmware version 4.6 and power module PM 250 6SL3225 0BE25 5AA1. I use TIA Portal V13 SP1. I use laptop withWindows 7software.

Firstly, I want to describe my project in few words. I work on developing laboratory station which            is already done – that means the G120 is connected to the synchronous motor and this whole station is controlled by few buttons and potentiometer (setting the velocity) – there is no PLC and this was programmed in STARTER software.

I was given a task of adding there PLC and HMI panel, which allows users for controlling the system from the operator panel, then I will have to carry commissioning this station. I am student and those are quite new issues for me, so that I really count on your help.

The main issues:

1. Firstly, I would like to connect my laptop with the Control Unit via Profinet and without using PLC.  I’ ve tried it recently, but I failed in it. Is it possible at all? I have option to use USB, but I really want to focus only on Profinet. Maybe connection G120 with laptop without PLC is impossible, I have no idea.
2. I’ve mentioned in advance that G120 is already programmed and configured (by means of STARTER software) and when I will finally connect with this drive I don’t want to change actual settings, accidentally. So, how can I protect those settings? Is there option to do backup of settings?
3. While I was adding drive G120 in TIA Portal using ‘Add new device’ I found only CU250S -2 PNVector instead of CU250S -2 PN (without vector). Are this elements the same element or they differs and can not be used interchangeably?
4. As I’ve mentioned, buttons, potentiometer, etc. are presently connected to Control Unit. Can I connect with CU via Profinet (including PLC and HMI panel) and control it without disconnecting that all elements? I want to have two control options: via operator panel and via buttons and potentiometer. Therefore, should I add a new switch, which would allow to choose suitable control and make inactive the other or there is other method?

Dears, please for your help. I would be most grateful if you would look into this matter as soon as possible.

Thank you in advance,

Adam

1. Yes it's possible. Use 'accessible nodes' in order to find the CU after connecting to it via PN. The unit should show there if you've chosen the correct interface.

2. You can just save the project somewhere and if needed just load the config to the CU.

3. Yes, PN Vector is the one you're looking for.

4. You can use different CDS (command data sets - look it up in the manual) and just switch between PN and terminals.

Thank you very much m_zlotek for your quick reply.

Can you explain more clearly what you mean:

m_zlotek

'Yes it's possible. Use 'accessible nodes' in order to find the CU after connecting to it via PN. The unit should show there if you've chosen the correct interfa

I have never met with statement 'accessible nodes' (where should I look for it?), I'm new at that kind of problems, so if you could explain me like for beginner I would be very grateful.

I think it's CTRL+U. There's a button located on the top center of the screen. Looks like three connected devices with a question mark, between 'offline' and 'run'. 

It's actually called "accessible devices" in TIA and "accessible nodes" in STARTER.

You can use it (both in STARTER and TIA) to detect all devices connected via chosen interface.

Thank you very much m_zlotek for your response.

Everything what you wrote is correct (I found it in TIA) and as quick as possible I will check it and give a feedback, whether I would connect to the G120.

m_zlotek you were right, I almost connected with the drive, but:

1. On attachment, as you can see on the left, there is Drive_1 which I added and Unassigned devices, which appeared automatically when I had connected to the device. What should I do merge those to devices into one device?

2. As you can see on attachment, I can't get online access to the device, - not reachable. What is wrong?

If you help me deal with those initial problems, I hope that then I will do well.

ChristophD

 Assign the IP 192.166.0.1 to the G120 and online should be possible.

 You mean 192.168.0.1