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The serial Modbus Master from 3S - Smart Software Solutions GmbH is used.
Add the serial Modbus Master, COM Port to the COM interface.
Activate function Auto-restart communication at the Master to assure that CODESYS
automatically confirms communication errors. and tries to continue with executing Mod-
bus commands instead of interrupting the Modbus communication. Otherwise the error
has to be reset using a slave function block.
Fig.47: Add Modbus RTU Master