PROFIBUS bus instrumentation and PLC communication settings - Database & Sql Blog Articles

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What hardware configuration is needed to build an automatic control system using a Profibus DP bus meter connected to a PLC and a host computer?

Answer: To set up an automatic control system with a Profibus DP bus meter, PLC, and host computer, the following hardware configuration is required: The PLC must have a Profibus DP interface. In STEP7 software, you need to install the GSD file of the bus device and configure it accordingly. For third-party DP slaves, the general process involves: 1. Using HW Config to install the device's GSD file and integrate it into the S7-300 master system. 2. Programming the PLC to read and write data from the corresponding I/O addresses. 3. If the slave device uses non-binary data formats, refer to the device manual for specific instructions on handling such data. It’s also recommended to consult Siemens experts or official documentation for more detailed guidance when working with non-standard DP slaves. This ensures compatibility and reliable communication across the network.