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System overview
3.3 System configuration
3.3
System configuration
3.3.1
Overview
The SIMATIC RF300 system is characterized by a high level of standardization of its
components. This means that the system follows the TIA principle throughout: Totally
Integrated Automation. It provides maximum transparency at all levels with its reduced
interface overhead. This ensures optimum interaction between all system components.
The RF300 system with its flexible components offers many possibilities for system
configuration. This chapter shows you how you can use the RF300 components on the basis
of various example scenarios.
3.3.2
Assembly line example: Use of RF300 transponders
In assembly lines, such as in engine manufacturing, many work steps are completed in
succession. Automated or manual assembly work is carried out at the individual workstations
in relatively short periods of time. The special features of the RF300 transponders, which
stand out for their large data memory and high transmission speeds, bring about many
advantages in regard to the production unit numbers of such plants.
The possibility of saving large volumes of data means savings in terms of data management
on the HOST system and considerably contributes to data security (redundant data
management e.g. HOST database or controller and data carrier)
Advantages at a glance:
● redundant data storage on the basis of large memory, availability of decentralized data
● high data rate
● data management savings on the host system
Features of the scenario
In this example scenario, engine blocks that are placed on metal pallets are conveyed on an
assembly line. The engines are assembled piece-by-piece at the individual workstations. The
RFID transponder of the type SIMATIC RF340T is mounted permanently on the underside of
the pallet. The transport speed is approx. 0.5 m/s.
In this scenario, it is an advantage that the transponder can be directly secured to metal on
the metal pallets. The small-dimensioned SIMATIC RF310R reader is integrated in the
conveyor elements in such a manner that it can communicate with the transponders from
below. Thus, it is not necessary to align the pallets or to attach several transponders.
The data of the entire production order (5000 bytes) is stored on the transponder. This data
is read at each workstation and changed or supplemented depending on the workstation,
and then written back again. Thus, the status of the engine block assembly can be
determined at any point in time, even if there is a failure at the HOST level.
Thanks to the extremely high data rate, a very short cycle time for the work steps can be
planned, which results in high end product unit numbers "engines".
34
System Manual, 07/2017, C79000-G8976-C345-07
SIMATIC RF300
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