PTP Global (MS20/MS30, PowerMICE, MACH 104, MACH 1040)

The table below helps you to select the PTP version and the PTP mode.

Tab. Selecting the PTP version and the PTP mode

Version

Mode

Reference clock used

Device with timestamp

PTP messages

Version 1

v1-simple-mode

Version 1

No

v1-boundary-clock

Version 1

Yes

Process

Version 2

v2-simple-mode

Version 2

No

v2-boundary-clock-onestep

Note: For the MS20, MS30 and PowerMICE devices with MM23 or MM33 modules, see sections See Devices without PTP hardware support. and See Devices with PTP hardware support..

Version 2

Yes

Process

v2-boundary-clock-twostep

Version 2

Yes

Process

v2-transparent-clock

Version 2

Yes

Forward


The PTP modes

enable you to optimize time division accuracy.

You use these dialogs for this purpose

The PTP modes

allow you to use the plug-and-play start-up.

Tab. Function IEEE 1588/PTP

Parameters

Meaning

Possible values

Default setting

Operation on/off

Enable/disable the PTP function

On, Off

Off


Tab. Configuration IEEE 1588/PTP, PTP version and mode, overview

Parameters

Meaning

Possible values

Default setting

PTP Version-Mode

Version and mode of the local clock.

v1-boundary-clock
v1-simple-mode
v2-boundary-clock-onestep
v2-boundary-clock-twostep
v2-transparent-clock
v2-simple-mode

v1-boundary-clock


Tab. Configuration IEEE 1588/PTP, PTP version and mode, details

Value for PTP version and PTP mode

Meaning

v1-boundary-clock

Boundary Clock function based on IEEE1588-2002 (PTPv1).

For the MS20, MS30 and PowerMICE devices with realtime modules and for MACH 104 and MACH 1040, see sections See Devices without PTP hardware support. and See Devices with PTP hardware support..

v1-simple-mode

Support for PTPv1 without special hardware. The device synchronizes itself with PTPv1 messages received. This mode does not provide any other functions, such as PTP management or runtime measuring.

Select this mode if the device only has ports absent a timestamp unit.

v2-boundary-clock-onestep

Boundary Clock function based on IEEE 1588-2008 (PTPv2).

The one-step mode determines the precise PTP time with 1 message.

For the MS20, MS30 and PowerMICE devices with MM23 or MM33 modules, see sections See Devices without PTP hardware support. and See Devices with PTP hardware support..

v2-boundary-clock-twostep

Boundary Clock function based on IEEE 1588-2008 (PTPv2).

The two-step mode determines the precise PTP time with 2 messages.

v2-transparent-clock

Transparent Clock function based on IEEE 1588-2008 (PTPv2).

Here, the MS20, MS30 and PowerMICE devices with MM23 or MM33 modules use only the one-step mode.

Here, the MACH 104 and MACH 1040 devices use only the two-step mode. They support a receive rate of 8 frames/s max.

v2-simple-mode

Support for PTPv2 without special hardware. The device synchronizes itself with PTPv2 messages received. This mode does not provide any other functions, such as PTP management or runtime measuring.

Select this mode if the device only has ports absent a timestamp unit.


Tab. Configuration IEEE 1588/PTP, synchronization thresholds

Parameters

Meaning

Possible values

Default setting

Sync Lower Bound [ns]

Bottom PTP synchronization threshold value, specified in nanoseconds. If the result of (reference time - local time) is lower than the value of the bottom PTP synchronization threshold, then the local clock is deemed as synchronous with the reference clock.

0-999999999

30

Sync Upper Bound [ns]

Top PTP synchronization threshold value, specified in nanoseconds. If the result of (reference time - local time) is greater than the value of the top PTP synchronization threshold, then the local clock is deemed as not being synchronous with the reference clock.

31-1000000000

5000


Tab. IEEE 1588/PTP status

Parameters

Meaning

Possible values

Default setting

Is Synchronized

Local clock synchronized with reference clock; compare Bottom synchronization threshold and Top synchronization threshold.

true, false

-

Max Offset Absolute [ns]

Total deviation of the local clock from the reference clock in nanoseconds since the local clock was last reset. The local clock is reset with “Reinitialize” in this dialog or by resetting the device.

-


Buttons

Tab. Buttons

Button

Meaning

“Set”

Transfers the changes to the volatile memory (RAM) of the device. To permanently save the changes, open the Basic Settings:Load/Save dialog, select the location to save the configuration, and click “Save”.

“Reload”

Updates the fields with the values that are saved in the volatile memory (RAM) of the device.

“Help”

Opens the online help.