My C# software tried to connect modbus TCP to CU310-2 PN via interface X150.
But, I couldn't connect because my try was rejected.
Please give me advice.

this is what I did.

-Expert list
I setted PN IP address, PN Def Gateway, PN Subnet Mast.
PN DHCP Mode - DHCP off.
Field bus int protocol selection - [13]Modbus TCP
List of drive objects is 2,1,3. I didn't change anything.
and then, PN interface configuration - Activate and save configuration.

PROFIdrive PZD telegrams(Communication - Telegram configuration)
object - drive object - No
1 - Drive_1 - 2
2 - Control_Unit - 1
3 - TM31 - 3
and, they are all free telegram.

Commissioning interfaces image is attached.

-Hardware
X127 is connected to PC for Siemens starter to set above.

X150 P1 is connected to PC for my C# software.
X150 P2 is connected to Siemnes HMI.

X127 and X150 Starts with the same 192.xxx

Please take a other Adress for X127, for example 169....