Software Implementation of Modbus Protocol in SIEMENS Series PLC
This paper introduces the software implementation method of Modbus communication protocol in SIEMENS PLC control system.Because the SIEMENS series PLC does not provide support for the Modbus protocol,there is a blind spot in the application of Modbus to other devices in the engineering application,and the method introduced in this paper can quickly and effectively implement the Modbus protocol communication and provide a powerful support for the users to connect more field devices.
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