ModbusRTUComm	KEYWORD1		
begin	KEYWORD2		
setTimeout	KEYWORD2		
readAdu	KEYWORD2		
writeAdu	KEYWORD2		
MODBUS_RTU_COMM_SUCCESS	LITERAL1		
MODBUS_RTU_COMM_TIMEOUT	LITERAL1		
MODBUS_RTU_COMM_FRAME_ERROR	LITERAL1		
MODBUS_RTU_COMM_CRC_ERROR	LITERAL1		