Hello Lucky;

Unfortunately I do not thisk you can use Modbus TCP with a G150 drive; see the G130/G150 catalog

Communication with higher-level control and customer Terminal Module

A PROFIBUS interface on the CU320-2 DP Control Unit is provided as standard as the customer interface.

When using the Control Unit CU320-2 PN (PROFINET) (Option K95), communication is realized via PROFINET corresponding to the PROFIdrive profile.

The Control Unit can be connected to the higher-level control via its digital inputs and outputs to exchange digital signals.

OPTIONAL Comm. Boards for G150 drives:

CBC10 Communication Board (CAN protocol)

CBE20 Communication Board (PROFINET)

I would suggest yourather look for Prosoft modules (Profibus-DP, Profinet) to connect your AB PLC to the drive on Profibus-DP or Profinet, WhatRockwell familyare you using?

http://www.prosoft-technology.com/Products/Rockwell-Automation-In-chassis

You can look into these Operaing Instructions to find out how to connect to the drive using Profbus-DP or Profinet-IO.

SINAMICS G150, Converter Cabinet Units 75 kW to 1500 kW

Hope this helps,

Daniel Chartier