How to Parameterize SINAMICS from a SIMATIC PG over Ethernet through an S7-400

A SINAMICS drive connected to an S7-400 over PROFIBUS can be accessed from an Ethernet-connected SIMATIC PG when the communication path is configured for routing. In the described installation, this required a routing-capable CP, Drive ES, and a PG/PC station defined correctly in NetPro. After configuring the PG/PC interface, the engineering PG was able to communicate with the SINAMICS drive without a PROFIBUS card in the PG.

System configuration

The engineering requirement was to use one SIMATIC PG for both the S7 application and SINAMICS parameterization while connecting the PG only through Ethernet.

The installation described in the source used:

SIMATIC Manager V5.4
STARTER installed on the same PG
CPU 414-3 DP
CP 443-1
SINAMICS S120, version V2.4
PROFIBUS communication between the CPU and SINAMICS
Ethernet communication between the PG and the S7-400 station

Although the original question refers to SINAMICS G120, the actual project configuration described in the discussion uses SINAMICS S120 V2.4.

The key requirement is that the engineering communication must be routed from the Ethernet-connected PG through the S7 station to the PROFIBUS-connected drive.

Requirements

For the configuration described in the discussion, the following elements were identified as necessary:

A CP that supports routing
Drive ES
The PG/PC represented in the STEP 7 project
Correct network configuration in NetPro
Correct assignment of the PG/PC interface
Existing PROFIBUS communication between the S7 controller and the SINAMICS drive

One response specifically identified Drive ES Basic V5.4 for this setup.

The PG itself does not need a PROFIBUS interface when the engineering connection is routed through Ethernet and the automation station.

Configure the engineering connection in NetPro

The successful configuration described in the discussion was based on defining the PG/PC and its Ethernet connection in the STEP 7 project.

Add or define the PG/PC station in the project.
Open the network configuration in NetPro.
Define the Ethernet interface used by the PG/PC.
Associate the PG/PC with the appropriate network.
Configure the PG/PC interface so that the engineering station uses the Ethernet connection.
Ensure that the CP in the S7-400 station supports routing.
Use Drive ES with the SINAMICS engineering configuration.
Establish the engineering connection to the SINAMICS drive through the configured routed path.

In the reported installation, this configuration allowed the Ethernet-connected PG to communicate successfully with the SINAMICS drive.

How the communication path works

The PG does not communicate directly with the SINAMICS drive over PROFIBUS because the PG has no PROFIBUS card.

Instead, the engineering connection follows the existing automation networks:

PG over Ethernet → S7-400 communication path → PROFIBUS → SINAMICS

This allows the same PG Ethernet interface to be used for accessing the S7 project and for engineering the SINAMICS drive.

The discussion indicates that a routing-capable CP is an important part of this arrangement. Simply having Ethernet access to the PLC does not by itself establish the required route to the PROFIBUS-connected drive.

The source also notes that STARTER was installed on the same engineering PG and that Drive ES was required for the successful configuration.

Verificación

The configuration is successful when the Ethernet-connected PG can establish engineering communication with the SINAMICS drive even though the PG has no PROFIBUS interface.

In the installation described in the source, communication with SINAMICS was successfully established after:

Drive ES was available;
the PG/PC was defined in NetPro; and
the PG/PC interface was configured correctly.

A practical confirmation is therefore to connect the PG through Ethernet and verify that the SINAMICS drive can be accessed for engineering or parameterization through the configured project path.

If the PLC can be reached over Ethernet but the drive cannot be reached, check the NetPro PG/PC definition, PG/PC interface assignment, and the availability of routing through the CP.

Frequently asked questions

Can a SINAMICS drive be parameterized from an Ethernet-only PG?

Yes. In the configuration described, the PG successfully communicated with the SINAMICS drive through Ethernet even though the PG had no PROFIBUS card. The communication was routed through the S7 station to the PROFIBUS-connected drive.

Is a PROFIBUS card required in the SIMATIC PG?

Not for the reported configuration. The PG used its Ethernet interface, while the automation station provided the path to the PROFIBUS-connected SINAMICS drive.

Why must the PG/PC be defined in NetPro?

The successful installation identified the NetPro PG/PC definition and PG/PC interface configuration as necessary parts of establishing the routed engineering connection.

Is Drive ES required?

The discussion concludes that Drive ES was required for the successful setup. One response specifically refers to Drive ES Basic V5.4.

Can the same PG be used for STEP 7 and SINAMICS engineering?

Yes. That was the objective of the configuration, and the reported result was successful communication with SINAMICS while the PG remained connected through Ethernet.

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Code: C345

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