Precise time management is required for running time-critical applications via a LAN.
The IEEE 1588 standard with the Precision Time Protocol (PTP) describes a procedure that determines the best master clock in a LAN and thus enables precise synchronization of the clocks in this LAN.
Devices without PTP hardware support, which only have ports absent a time stamp unit, support the PTP simple mode. This mode gives a less accurate division of time.
With these devices
enable/disable the PTP function in the PTP Dialog,
select PTP mode in the PTP Dialog.
Select v1-simple-mode if the reference clock uses PTP Version 1.
Select v2-simple-mode, if the reference clock uses PTP Version 2.
Devices with PTP hardware support, which have ports with a time stamp unit, support other modes subject to the version of the time stamp unit.
MS20, MS30 and PowerMICE devices with the modules
MM3-4TX1-RT
MM3-2FXM2/2TX1-RT
MM3-2FXS2/2TX1-RT
MM3-2FLM4/2TX1-RT
support the modes
v1-boundary-clock
v1-simple-mode
v2-boundary-clock-twostep, only with the network protocol UDP/IPv4 and the runtime measurement E2E
MS20, MS30 and PowerMICE devices with the modules
MM23
MM33
support the modes:
v1-boundary-clock
v1-simple-mode
v2-boundary-clock-onestep
v2-boundary-clock-twostep
v2-transparent-clock
v2-simple-mode
MACH 104 and MACH 1040 devices support the modes
v1-boundary-clock
v1-simple-mode
v2-boundary-clock-twostep
v2-transparent-clock
v2-simple-mode
The following sections relate exclusively to devices with PTP hardware support.