Dear Experts,

I have a problem with profinet connection between G120 CU250S-2pn and CPU 314C-2PN/DP

CPU : 192.168.0.100

PC : 192.168.0.10 (Port 1 of 314C : green light)

G120 : 192.168.0.2 (Port 2 of 314C - Port 1 G120 , port 2 of G120 i set no use)

when i download the program there are no bus fault in G120 and no fault in CPU 314C. But the port 1 of 314C green light (i can download and control via HMI) , port 2 of 314C which is connect with port 1 G120 is yellow light and it may not be a good connection because i cannot send control word and read status word of G120.

Please tell me what is the problem?

Dear Mr Christoph,

I send data directly without using FB/Fc .

I use telegram 1 , in stop mode i send 16#47E to control word 1 . and move status word 1 to my data block (for example DB42.dbw0).

But when i read r2090 in the g120 , all bit are 0 . So i think i have a wrong connection ( but there are no bus fault in both CPU 314c-2pn and G120)

Please help me.

Dear Mr,

In Stop Mode means  motor stop.

The address of Control word 1 is : IW 256 , speed is iw 258

The address of status word 1 is  Qw256 and feedback speed is QW258

When i move 16#47e to iw256 and read r2090 in inverter i see r2090 =  0x0. 

Parameter P922 = 1 (telegram 1) . What do you means operation state ?

Thank

Dear sir,

I use tia portal so the analog address  is IW and QW not PIW and PQW like S7-v5.5.

And i dont understand the process image that you mention .

Thanks

Dear Sir,

Thank for your notice, i make a basic faulty, now i change QW and iW and i can read the status word 1 of  the inverter its valus is 16#47f, but when i send the control word 1 16#47e. I stll see the value r2090 = 0x0

Thank

Dear Sir,

Thank for your support, i can run the inverter. The first problem is i miss the "P" letter  before QW and IW ( i think in tiaportal s7-300 is same with S7-1200 .And the Second is I missunderstand between PIW and PQW in the inverter.

Thank you so much