Schneider has a communications strategy based on open standards (core of the range) such as:
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Ethernet Modbus TCP/IP
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CANopen
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AS-Interface
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Modbus Link Series
This has not always been the case and there are a significant number of installed bases on networks or proprietary buses such as Modbus Plus, Fipway, Ethway, X-Way on TCP/IP, Fipio, Symax and Uni-telway.
Schneider offers a connectivity range for the main standards available on the market through its Profibus, Interbus and TCPopen ranges.
The possible and recommended communication architectures are presented in the following pages, according to the type of PLC used:
The communication solutions for existing installations, from the Telemecanique or Modicon ranges, are then presented.
The following diagram shows a global communication architecture with an AS-i bus:
The following diagram shows a global communication architecture with a Modbus and Uni-Telway bus:
The following diagram shows a global communication architecture with a Modbus and Fipio bus:
NOTE: Depending on the type of network used, the interconnection is made either directly via a PLC which routes the information (Ethernet/Uni-Telway), or via an additional device such as a bridge (Ethernet/Modbus) or switch (Ethernet/Ethernet).
NOTE: Technically, sophisticated solutions using Ethernet, Modbus Plus, Fipway, Fipio, Modbus, Uni-Telway etc. in a single architecture are possible. However, to facilitate maintenance, user training and to reduce operating costs, it is recommended that you aim for maximum homogeneity between the types of networks and buses used. In the following architecture examples, we give an overview of the most suitable solutions depending on the devices connected.
