Modbus Ethernet Communication; Modbus Ethernet Description - Siemens SINAMICS PERFECT HARMONY GH180 Function Manual

Modbus Ethernet Communication

5.1

Modbus Ethernet Description

This chapter contains instructions for controlling the drive that uses a PLC over a Modbus™
Ethernet network. This chapter addresses the following topics:
• Description of the interface
• User Programming
• Parameter assignment and addressing
• Configuration and setup options
• Available functions
Description
The Modbus™ Ethernet communication interface is based on the TCP/IP protocol. All addressing
is based on IP addresses.
The drive always acts as a Modbus™ server. This means that the drive does not initiate dialog on
the Modbus™ Ethernet network. Rather, it listens to and then responds to the Modbus™ Ethernet
client.
Note
Only register-based read and write functions of the Modbus™ protocol are supported. These
functions are used to monitor and control analog and digital inputs and outputs of the drive.
Only the Remote Terminal Unit (RTU) format of the Modbus™ protocol is supported by the
NXGPro+ Control. All requests are sent via register port 502.
Refer to section Functions for function codes supported by the NXGPro+ Control.
To enable dual network functionality, this protocol requires an additional Anybus™ Modbus
Ethernet module.
NXGPro+ Communication Manual
Function Manual, AA, A5E50226719
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