Siemens TCP/IP Ethernet

Manufacturing Suite

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Siemens Plus Suite

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Siemens Suite

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Product Overview

The Siemens TCP/IP Ethernet driver exchanges data between OPC clients and Siemens S7-200, S7-300, S7-400, and S7-1200 PLCs using the TCP/IP Ethernet protocol. The driver talks directly to the S7 PLC using a standard PC network interface card, and does not require additional software packages or libraries. Specialized block read and write optimizations automatically increase the speed of many applications when using CP243, CP343, and CP443 communications processors.

The Siemens TCP/IP Ethernet driver also supports the netLink adapter cable.


  • Supports multiple connections for each device
  • Supports the CP-243, CP-343, and CP-443 TCP/IP Communications Cards
  • Supports access on PC/PG/OP access ports
  • Supports maximum Packet Data Unit (PDU) size configured on device for performance and efficiency
  • Supports the following Memory Types: I, E, Q, A, M, F, T, C, Z, and Data Block Access
  • Supports bit-level access
  • Supports the low-cost NetLink communications adapter
  • Supports the NetLink Configuration Utility (Gateway from Ethernet to S7 MPI)
  • Supports Automatic Tag Generation from a Simatic STEP 7 project for S7-300 and S7-400 devices
  • Supports Automatic Tag Generation from TIA Portal for S7-300, S7-400, S7-1200, and S7-1500 devices via the TIA Portal Exporter Utility


  • Siemens Industrial Ethernet

Supported Devices

  • netLink 50-MPI - S7-300
  • netLink 50-MPI - S7-400
  • netLink -MPI - S7-400
  • netLink-MPI - S7-300
  • netTap 40-MPI - S7-300
  • netTap 40-MPI - S7-400
  • S7-1200- Family
  • S7-1500- Family
  • S7-200 - Family
  • S7-300 - Family
  • S7-400 - Family

Available Languages

  • English
  • German
  • Japanese
  • Simplified Chinese

Application Support

  • DDE Format CF_Text and AdvancedDDE
  • NIO Interface for iFIX
  • OPC .NET Service (OPC .NET) Version 1.00
  • OPC Alarms and Events (OPC AE) Version 1.10
  • OPC Data Access (OPC DA) Versions 1.0a, 2.0, 2.05a, and 3.0
  • OPC Unified Architecture (OPC UA) Clients
  • SuiteLink and FastDDE for Wonderware


Release Notes

Access and search all Kepware product release notes here.

Featured Suites

TIA Portal Exporter Utility

The enables users with Siemens S7-300, S7-400, S7-1200 or S7-1500 controllers programmed with Siemens TIA Portal to automatically generate the specific tags they need for their KEPServerEX projects. Offered at no additional cost as a standalone installation, it provides compatibility with TIA Portal V13 SP1, V13 SP2, V14, V14 SP1, V15, and V16.

The features the ability to:

  • Select a specific controller within the Siemens TIA Portal project
  • Select tags from all tag tables, data blocks, UDTs and function blocks
  • Search/filter on tag name, address or data type
  • Import the specific tags required in a KEPServerEX project
Download the TIA Portal Exporter Utility