![]() The data is stored in compressed form (8 bit per byte) starting from address pMemoryAddr. Reads binary inputs from a connected slave. Reads binary outputs (coils) from a connected slave. Each Modbus function is implemented as an action.Īn example program for a BC bus controller explains the operating principle. The block is not called in its basic form, but individual actions of that block are used within a PLC program. ![]() The function block ModbusRtuMaster_KL6x22B implements a Modbus master that communicates via a serial Bus Terminal KL6021 or KL6041. FUNCTION_BLOCK ModbusRtuMaster_KL6x22B TwinCAT PLC Serial Communication Modbus RTU
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