This part of the ISA 62453 series provides information for integrating Modbus TCP and Modbus Serial Line protocol support into FDT based systems. NOTE:This part of ISA 62453 series only specifies the mapping of Modbus parameters to FDT data types. For restrictions of protocol specific parameters concerning allowed values and concerning limitations of arrays used in the definition of FDT data types, refer to IEC 61158-5-15 and the MODBUS Application Protocol Specification.