Mine is named “dbHoldingRegisters” and I filled it with an array of random values to send to LabVIEW. You will need to create a data block for holding registers, which contain the information you are trying to send and receive. This will be the only rung you need in Main. To set up Modbus Communication in TIA Portal, drag an “MB_Server” block to the Main. Modbus is an easy to deploy protocol that enables multiple devices on the same network to communicate. Modbus TCP is an excellent way to transfer data between the two programs. The list of different benefits these two offerings is long, but what if you need both? Have you ever needed to integrate LabVIEW into a Siemens PLC project or vice versa? PLCs offer features such as reliability and safety, whereas LabVIEW has plug and play libraries for a variety of hardware.
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