Description:
The IEEE standard 1588 is entitled
"Standard for a Precision Clock Synchronization Protocol for
Networked Measurement and Control Systems", in short Precision Time
Protocol (PTP). It defines a method and procedure for synchronizing
multiple distributed real-time clocks that are linked via a
package-relaying network. PTP is designed for implementation via
Ethernet, but not limited to this. In principle any other
package-relaying protocol that supports multicast addresses can
also be used. The concept isolates the CSMA/CD layer from the upper
application layer. In practice control of a process can thus be
decoupled from the data transfer protocol.
However, this function is not supported by SIMATIC controllers
or CP343-1/CP443-1.
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