The supported Modbus API is included in the LabVIEW DSC Module and the LabVIEW Real-Time Module. Everything must be done manually when using this low-level API. The supported Modbus API provides fine control over the Modbus protocol, with high performance. Supported Modbus API (boxed in blue in the screenshot above) In exchange for ease of use, Modbus I/O Servers do not have the fine control that the supported LabIVEW Modbus API has over the Modbus protocol that can be required for some applications. Modbus I/O Servers is included in the LabVIEW DSC Module and the LabVIEW Real-Time Module. Modbus I/O Servers provide a simple way to access and write Modbus data in LabVIEW. The Modbus I/O Server allows you to easily link Modbus register values to Shared Variables that you can use in your LabVIEW VIs.
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