Connection to G120 with CU240S DP

How can I connect to inverter to download parameter (make backup parameters).

I try with starter and profibus but i can't connect. Is it possible to do this with profibus protocol?

Can I use PC connection kit (6SL3255-0AA00-2AA10) with cheap USB<-->RS232 converter?

I used S7-Lan converter (http://inee.pl/produkty/s7-lan). I can connect to S7-300, upload software, and hardware (Step7). I can go online (in Step7 online mode i see all profibus nodes - in hardware configurator) but then i try option "display accessible nodes" (on Step7 or Starter) I can't see the inverter profibus address.

Did I must set or check someting else in starter or in inverter?

The ProfiBus speed is set to 1,5Mb/s.

ChristophD

Hello,

if yonnect the adapter direct to the G120 then you must set the option "only master on the bus" because the G120 works in DP Slave mode.

Regards

Christoph

 I know I don't try connect only to inverter. I connect to working system with CPU S7-300.

PLC S7-314 with MPI and ProfiBus DP - I connect to connector on PLC (profibus). Terminators sets OK - on the ends of bus.

From Step7 online I can see hardware like this: hw_config_online.jpg but in "accesible nodes" I see devices on addres 0,1,2,3,5,6,7 (not 15,16,17,18).

Now I'm at home, I can't connect and make "display accessible nades" :(.

I check parameter P918 on BOP (profibus addres) on inverters and it was set OK (15-18).

On above screen on table you can see that node 15 is online and work OK (I check adr 16,17,18 - OK). All system works OK so i think bus and adresses are OK.