Description
The HVAC Modbus library for CODESYS contains standard function blocks for reading/writing via Modbus RTU and TCP.
The library contains manufacturer-specific function blocks that can be used without you having to configure the registers. Matching visualization objects for the function blocks are available in the HVACV Visu library.
In order to use the library, either a TCP Master or an RTU Master block must be placed, which is then connected to a block from the library.
Example connection with TCP Master
Example connection with serial COM port (RS485 for Modbus RTU)
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